/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:11:05,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:11:05,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:11:05,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:11:05,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:11:05,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:11:05,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:11:05,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:11:05,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:11:05,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:11:05,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:11:05,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:11:05,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:11:05,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:11:05,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:11:05,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:11:05,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:11:05,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:11:05,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:11:05,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:11:05,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:11:05,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:11:05,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:11:05,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:11:05,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:11:05,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:11:05,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:11:05,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:11:05,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:11:05,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:11:05,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:11:05,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:11:05,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:11:05,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:11:05,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:11:05,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:11:05,785 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:11:05,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:11:05,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:11:05,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:11:05,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:11:05,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:11:05,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:11:05,786 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:11:06,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:11:06,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:11:06,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:11:06,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:11:06,141 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:11:06,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-08-22 22:11:06,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475f8c5c2/5bd19dbfe75640f88a6988471930fce2/FLAG244db6fc9 [2020-08-22 22:11:06,681 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:11:06,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-08-22 22:11:06,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475f8c5c2/5bd19dbfe75640f88a6988471930fce2/FLAG244db6fc9 [2020-08-22 22:11:07,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475f8c5c2/5bd19dbfe75640f88a6988471930fce2 [2020-08-22 22:11:07,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:11:07,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:11:07,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:11:07,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:11:07,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:11:07,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c8aa76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07, skipping insertion in model container [2020-08-22 22:11:07,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:11:07,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:11:07,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:11:07,276 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:11:07,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:11:07,306 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:11:07,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07 WrapperNode [2020-08-22 22:11:07,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:11:07,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:11:07,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:11:07,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:11:07,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... [2020-08-22 22:11:07,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:11:07,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:11:07,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:11:07,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:11:07,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:11:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:11:07,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:11:07,491 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 22:11:07,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:11:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:11:07,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:11:07,665 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:11:07,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:11:07 BoogieIcfgContainer [2020-08-22 22:11:07,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:11:07,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:11:07,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:11:07,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:11:07,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:11:07" (1/3) ... [2020-08-22 22:11:07,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f3cbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:11:07, skipping insertion in model container [2020-08-22 22:11:07,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:11:07" (2/3) ... [2020-08-22 22:11:07,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f3cbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:11:07, skipping insertion in model container [2020-08-22 22:11:07,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:11:07" (3/3) ... [2020-08-22 22:11:07,677 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-08-22 22:11:07,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:11:07,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:11:07,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:11:07,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:11:07,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:11:07,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:11:07,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:11:07,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:11:07,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:11:07,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:11:07,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:11:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-22 22:11:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 22:11:07,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:07,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:07,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-08-22 22:11:07,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:07,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351638860] [2020-08-22 22:11:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:11:08,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351638860] [2020-08-22 22:11:08,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:11:08,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:11:08,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406834731] [2020-08-22 22:11:08,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:11:08,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:08,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:11:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:11:08,106 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-22 22:11:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:08,227 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-08-22 22:11:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:11:08,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 22:11:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:08,241 INFO L225 Difference]: With dead ends: 37 [2020-08-22 22:11:08,241 INFO L226 Difference]: Without dead ends: 22 [2020-08-22 22:11:08,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:11:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-22 22:11:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-22 22:11:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 22:11:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-08-22 22:11:08,303 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-08-22 22:11:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:08,304 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-08-22 22:11:08,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:11:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-08-22 22:11:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 22:11:08,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:08,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:08,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:11:08,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-08-22 22:11:08,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:08,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914206921] [2020-08-22 22:11:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:11:08,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914206921] [2020-08-22 22:11:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:08,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:11:08,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960174748] [2020-08-22 22:11:08,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:11:08,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:11:08,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:11:08,548 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-08-22 22:11:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:08,621 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 22:11:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:11:08,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-08-22 22:11:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:08,623 INFO L225 Difference]: With dead ends: 31 [2020-08-22 22:11:08,623 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 22:11:08,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:11:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 22:11:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 22:11:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 22:11:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-08-22 22:11:08,635 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-08-22 22:11:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:08,635 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-08-22 22:11:08,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:11:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-08-22 22:11:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 22:11:08,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:08,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:08,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:11:08,638 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-08-22 22:11:08,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:08,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312093229] [2020-08-22 22:11:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 22:11:08,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312093229] [2020-08-22 22:11:08,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:08,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:11:08,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496847165] [2020-08-22 22:11:08,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:11:08,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:11:08,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:11:08,983 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-08-22 22:11:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:09,106 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-08-22 22:11:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:11:09,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-08-22 22:11:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:09,109 INFO L225 Difference]: With dead ends: 35 [2020-08-22 22:11:09,109 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 22:11:09,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:11:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 22:11:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 22:11:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 22:11:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-08-22 22:11:09,120 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-08-22 22:11:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:09,120 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-08-22 22:11:09,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:11:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-08-22 22:11:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 22:11:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:09,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:09,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:11:09,123 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-08-22 22:11:09,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:09,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206564308] [2020-08-22 22:11:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 22:11:09,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206564308] [2020-08-22 22:11:09,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:09,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:11:09,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271217470] [2020-08-22 22:11:09,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:11:09,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:11:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:11:09,469 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-08-22 22:11:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:09,625 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-08-22 22:11:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:11:09,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-08-22 22:11:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:09,628 INFO L225 Difference]: With dead ends: 39 [2020-08-22 22:11:09,628 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 22:11:09,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:11:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 22:11:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-08-22 22:11:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 22:11:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-08-22 22:11:09,638 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-08-22 22:11:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:09,639 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-08-22 22:11:09,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:11:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-08-22 22:11:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 22:11:09,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:09,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:09,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:11:09,641 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:09,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-08-22 22:11:09,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:09,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749506183] [2020-08-22 22:11:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 22:11:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749506183] [2020-08-22 22:11:09,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:09,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 22:11:09,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097611977] [2020-08-22 22:11:09,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:11:09,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:11:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:11:09,929 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-08-22 22:11:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:10,104 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-08-22 22:11:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 22:11:10,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-08-22 22:11:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:10,106 INFO L225 Difference]: With dead ends: 43 [2020-08-22 22:11:10,107 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 22:11:10,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:11:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 22:11:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 22:11:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 22:11:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-08-22 22:11:10,118 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-08-22 22:11:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:10,118 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-08-22 22:11:10,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:11:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-08-22 22:11:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 22:11:10,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:10,121 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:10,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:11:10,121 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-08-22 22:11:10,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:10,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233140660] [2020-08-22 22:11:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 22:11:10,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233140660] [2020-08-22 22:11:10,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:10,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 22:11:10,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735435907] [2020-08-22 22:11:10,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:11:10,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:11:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:11:10,488 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-08-22 22:11:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:10,732 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-08-22 22:11:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:11:10,732 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-08-22 22:11:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:10,734 INFO L225 Difference]: With dead ends: 47 [2020-08-22 22:11:10,734 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 22:11:10,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:11:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 22:11:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-22 22:11:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 22:11:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-08-22 22:11:10,743 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-08-22 22:11:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:10,744 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-08-22 22:11:10,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:11:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-08-22 22:11:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:11:10,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:10,745 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:10,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:11:10,746 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-08-22 22:11:10,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:10,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320990672] [2020-08-22 22:11:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 22:11:11,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320990672] [2020-08-22 22:11:11,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:11,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:11:11,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109026514] [2020-08-22 22:11:11,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:11:11,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:11:11,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:11:11,240 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-08-22 22:11:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:11,518 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-08-22 22:11:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 22:11:11,518 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-08-22 22:11:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:11,520 INFO L225 Difference]: With dead ends: 51 [2020-08-22 22:11:11,520 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 22:11:11,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:11:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 22:11:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-08-22 22:11:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 22:11:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-08-22 22:11:11,529 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-08-22 22:11:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:11,530 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-08-22 22:11:11,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:11:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-08-22 22:11:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 22:11:11,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:11,531 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:11,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:11:11,532 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-08-22 22:11:11,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:11,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319354245] [2020-08-22 22:11:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:11:11,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319354245] [2020-08-22 22:11:11,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:11,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:11:11,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605973847] [2020-08-22 22:11:11,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:11:11,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:11:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:11:11,982 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-08-22 22:11:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:12,305 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-08-22 22:11:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 22:11:12,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-08-22 22:11:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:12,307 INFO L225 Difference]: With dead ends: 55 [2020-08-22 22:11:12,307 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 22:11:12,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-08-22 22:11:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 22:11:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-08-22 22:11:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 22:11:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-08-22 22:11:12,320 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-08-22 22:11:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:12,322 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-08-22 22:11:12,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:11:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-08-22 22:11:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 22:11:12,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:12,325 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:12,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:11:12,328 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-08-22 22:11:12,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:12,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375423329] [2020-08-22 22:11:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 22:11:12,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375423329] [2020-08-22 22:11:12,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:12,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-22 22:11:12,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496982681] [2020-08-22 22:11:12,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 22:11:12,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 22:11:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:11:12,957 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-08-22 22:11:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:13,364 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-08-22 22:11:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 22:11:13,364 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-08-22 22:11:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:13,366 INFO L225 Difference]: With dead ends: 59 [2020-08-22 22:11:13,366 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 22:11:13,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-08-22 22:11:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 22:11:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-22 22:11:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 22:11:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-08-22 22:11:13,382 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-08-22 22:11:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:13,383 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-08-22 22:11:13,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 22:11:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-08-22 22:11:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 22:11:13,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:13,388 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:13,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:11:13,388 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:13,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-08-22 22:11:13,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:13,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662712684] [2020-08-22 22:11:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-08-22 22:11:14,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662712684] [2020-08-22 22:11:14,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:14,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:11:14,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64056481] [2020-08-22 22:11:14,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:11:14,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:14,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:11:14,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:11:14,054 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-08-22 22:11:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:14,523 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-08-22 22:11:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-22 22:11:14,525 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-08-22 22:11:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:14,526 INFO L225 Difference]: With dead ends: 63 [2020-08-22 22:11:14,526 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 22:11:14,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 22:11:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 22:11:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-22 22:11:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 22:11:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-08-22 22:11:14,549 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-08-22 22:11:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:14,549 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-08-22 22:11:14,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:11:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-08-22 22:11:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 22:11:14,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:14,554 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:14,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:11:14,554 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:14,555 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-08-22 22:11:14,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:14,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879899274] [2020-08-22 22:11:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-22 22:11:15,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879899274] [2020-08-22 22:11:15,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:15,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 22:11:15,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673445460] [2020-08-22 22:11:15,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 22:11:15,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:15,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 22:11:15,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:11:15,370 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-08-22 22:11:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:15,980 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-08-22 22:11:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 22:11:15,981 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-08-22 22:11:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:15,983 INFO L225 Difference]: With dead ends: 67 [2020-08-22 22:11:15,983 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 22:11:15,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 22:11:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 22:11:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-22 22:11:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 22:11:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-08-22 22:11:16,006 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-08-22 22:11:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:16,006 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-08-22 22:11:16,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 22:11:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-08-22 22:11:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 22:11:16,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:16,008 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:16,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:11:16,008 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:16,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-08-22 22:11:16,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:16,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6119103] [2020-08-22 22:11:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-08-22 22:11:16,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6119103] [2020-08-22 22:11:16,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:16,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-22 22:11:16,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496389075] [2020-08-22 22:11:16,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 22:11:16,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:16,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 22:11:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-08-22 22:11:16,867 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-08-22 22:11:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:17,545 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-08-22 22:11:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 22:11:17,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-08-22 22:11:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:17,547 INFO L225 Difference]: With dead ends: 71 [2020-08-22 22:11:17,547 INFO L226 Difference]: Without dead ends: 66 [2020-08-22 22:11:17,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 22:11:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-22 22:11:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-22 22:11:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 22:11:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-08-22 22:11:17,557 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-08-22 22:11:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:17,557 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-08-22 22:11:17,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 22:11:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-08-22 22:11:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 22:11:17,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:17,558 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:17,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:11:17,559 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-08-22 22:11:17,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:17,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520448334] [2020-08-22 22:11:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-08-22 22:11:18,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520448334] [2020-08-22 22:11:18,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:18,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 22:11:18,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677651567] [2020-08-22 22:11:18,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 22:11:18,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 22:11:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:11:18,555 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-08-22 22:11:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:19,306 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-08-22 22:11:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 22:11:19,306 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-08-22 22:11:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:19,308 INFO L225 Difference]: With dead ends: 75 [2020-08-22 22:11:19,308 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 22:11:19,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 22:11:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 22:11:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-22 22:11:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 22:11:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-08-22 22:11:19,320 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-08-22 22:11:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:19,321 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-08-22 22:11:19,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 22:11:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-08-22 22:11:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 22:11:19,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:19,322 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:19,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:11:19,323 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-08-22 22:11:19,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:19,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615060267] [2020-08-22 22:11:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-08-22 22:11:20,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615060267] [2020-08-22 22:11:20,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:20,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 22:11:20,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142755689] [2020-08-22 22:11:20,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 22:11:20,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:20,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 22:11:20,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-08-22 22:11:20,447 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-08-22 22:11:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:21,307 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-08-22 22:11:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 22:11:21,307 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-08-22 22:11:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:21,309 INFO L225 Difference]: With dead ends: 79 [2020-08-22 22:11:21,309 INFO L226 Difference]: Without dead ends: 74 [2020-08-22 22:11:21,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:11:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-22 22:11:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-08-22 22:11:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-22 22:11:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-08-22 22:11:21,318 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-08-22 22:11:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:21,319 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-08-22 22:11:21,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 22:11:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-08-22 22:11:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-08-22 22:11:21,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:21,321 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:21,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:11:21,321 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:21,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-08-22 22:11:21,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:21,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2970144] [2020-08-22 22:11:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:21,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-08-22 22:11:22,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2970144] [2020-08-22 22:11:22,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:22,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-22 22:11:22,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183809617] [2020-08-22 22:11:22,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-22 22:11:22,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:22,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-22 22:11:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 22:11:22,584 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 33 states. [2020-08-22 22:11:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:23,590 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-08-22 22:11:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 22:11:23,591 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-08-22 22:11:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:23,593 INFO L225 Difference]: With dead ends: 83 [2020-08-22 22:11:23,593 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 22:11:23,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 22:11:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 22:11:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 22:11:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 22:11:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-08-22 22:11:23,603 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 114 [2020-08-22 22:11:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:23,604 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-08-22 22:11:23,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-22 22:11:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-08-22 22:11:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 22:11:23,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:23,605 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:23,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:11:23,606 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:23,606 INFO L82 PathProgramCache]: Analyzing trace with hash -751861855, now seen corresponding path program 15 times [2020-08-22 22:11:23,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:23,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019428881] [2020-08-22 22:11:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-08-22 22:11:24,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019428881] [2020-08-22 22:11:24,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:24,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-22 22:11:24,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287516638] [2020-08-22 22:11:24,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-22 22:11:24,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:24,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-22 22:11:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 22:11:24,975 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 35 states. [2020-08-22 22:11:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:26,107 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-08-22 22:11:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-22 22:11:26,108 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 121 [2020-08-22 22:11:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:26,110 INFO L225 Difference]: With dead ends: 87 [2020-08-22 22:11:26,112 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 22:11:26,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 22:11:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 22:11:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-08-22 22:11:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 22:11:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-08-22 22:11:26,125 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 121 [2020-08-22 22:11:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:26,126 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-08-22 22:11:26,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-22 22:11:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-08-22 22:11:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 22:11:26,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:26,131 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:26,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:11:26,131 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:26,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:26,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2017083634, now seen corresponding path program 16 times [2020-08-22 22:11:26,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:26,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900359205] [2020-08-22 22:11:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-22 22:11:27,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900359205] [2020-08-22 22:11:27,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:27,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-22 22:11:27,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582429234] [2020-08-22 22:11:27,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-22 22:11:27,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:27,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-22 22:11:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 22:11:27,683 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 37 states. [2020-08-22 22:11:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:28,946 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-08-22 22:11:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 22:11:28,946 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2020-08-22 22:11:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:28,948 INFO L225 Difference]: With dead ends: 91 [2020-08-22 22:11:28,948 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 22:11:28,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=139, Invalid=2723, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 22:11:28,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 22:11:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-08-22 22:11:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 22:11:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-08-22 22:11:28,958 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 128 [2020-08-22 22:11:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:28,958 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-08-22 22:11:28,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-22 22:11:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-08-22 22:11:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-08-22 22:11:28,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:28,961 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:28,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:11:28,961 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:28,961 INFO L82 PathProgramCache]: Analyzing trace with hash -750736845, now seen corresponding path program 17 times [2020-08-22 22:11:28,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:28,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764222464] [2020-08-22 22:11:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-08-22 22:11:30,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764222464] [2020-08-22 22:11:30,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:30,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 22:11:30,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150142692] [2020-08-22 22:11:30,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 22:11:30,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 22:11:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 22:11:30,569 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 39 states. [2020-08-22 22:11:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:32,129 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-08-22 22:11:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-08-22 22:11:32,130 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 135 [2020-08-22 22:11:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:32,131 INFO L225 Difference]: With dead ends: 95 [2020-08-22 22:11:32,131 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 22:11:32,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 22:11:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 22:11:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-22 22:11:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 22:11:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-08-22 22:11:32,140 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-08-22 22:11:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:32,140 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-08-22 22:11:32,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 22:11:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-08-22 22:11:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 22:11:32,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:32,142 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:32,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 22:11:32,143 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 112489604, now seen corresponding path program 18 times [2020-08-22 22:11:32,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:32,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256013786] [2020-08-22 22:11:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-08-22 22:11:33,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256013786] [2020-08-22 22:11:33,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:33,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-08-22 22:11:33,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224216999] [2020-08-22 22:11:33,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-22 22:11:33,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-22 22:11:33,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 22:11:33,960 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 41 states. [2020-08-22 22:11:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:35,557 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-08-22 22:11:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-08-22 22:11:35,558 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 142 [2020-08-22 22:11:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:35,560 INFO L225 Difference]: With dead ends: 99 [2020-08-22 22:11:35,560 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 22:11:35,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2020-08-22 22:11:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 22:11:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-08-22 22:11:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 22:11:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-08-22 22:11:35,569 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 142 [2020-08-22 22:11:35,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:35,570 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-08-22 22:11:35,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-22 22:11:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-08-22 22:11:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 22:11:35,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:35,572 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:35,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 22:11:35,573 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:35,573 INFO L82 PathProgramCache]: Analyzing trace with hash 374596293, now seen corresponding path program 19 times [2020-08-22 22:11:35,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:35,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598505589] [2020-08-22 22:11:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-08-22 22:11:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598505589] [2020-08-22 22:11:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-08-22 22:11:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861257433] [2020-08-22 22:11:37,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 22:11:37,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 22:11:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 22:11:37,550 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 43 states. [2020-08-22 22:11:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:39,308 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-08-22 22:11:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-08-22 22:11:39,309 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 149 [2020-08-22 22:11:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:39,311 INFO L225 Difference]: With dead ends: 103 [2020-08-22 22:11:39,311 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 22:11:39,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=163, Invalid=3743, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 22:11:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 22:11:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-08-22 22:11:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 22:11:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-08-22 22:11:39,322 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 149 [2020-08-22 22:11:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:39,322 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-08-22 22:11:39,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 22:11:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-08-22 22:11:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 22:11:39,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:39,324 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:39,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 22:11:39,325 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1900661226, now seen corresponding path program 20 times [2020-08-22 22:11:39,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:39,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163739538] [2020-08-22 22:11:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:41,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-08-22 22:11:41,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163739538] [2020-08-22 22:11:41,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:41,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-08-22 22:11:41,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738265379] [2020-08-22 22:11:41,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-08-22 22:11:41,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-08-22 22:11:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:11:41,465 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 45 states. [2020-08-22 22:11:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:43,430 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-08-22 22:11:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-08-22 22:11:43,430 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 156 [2020-08-22 22:11:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:43,432 INFO L225 Difference]: With dead ends: 107 [2020-08-22 22:11:43,432 INFO L226 Difference]: Without dead ends: 102 [2020-08-22 22:11:43,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=4119, Unknown=0, NotChecked=0, Total=4290 [2020-08-22 22:11:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-22 22:11:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-22 22:11:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-22 22:11:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-08-22 22:11:43,441 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 156 [2020-08-22 22:11:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:43,442 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-08-22 22:11:43,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-08-22 22:11:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-08-22 22:11:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 22:11:43,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:43,445 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:43,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 22:11:43,445 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1591006889, now seen corresponding path program 21 times [2020-08-22 22:11:43,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:43,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864295899] [2020-08-22 22:11:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:44,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-08-22 22:11:45,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864295899] [2020-08-22 22:11:45,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:45,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-08-22 22:11:45,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604755058] [2020-08-22 22:11:45,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 22:11:45,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 22:11:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 22:11:45,862 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 47 states. [2020-08-22 22:11:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:48,018 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-08-22 22:11:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-08-22 22:11:48,021 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 163 [2020-08-22 22:11:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:48,023 INFO L225 Difference]: With dead ends: 111 [2020-08-22 22:11:48,023 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 22:11:48,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2020-08-22 22:11:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 22:11:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-08-22 22:11:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-22 22:11:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-08-22 22:11:48,034 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 163 [2020-08-22 22:11:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:48,035 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-08-22 22:11:48,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 22:11:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-08-22 22:11:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-22 22:11:48,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:48,038 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:48,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 22:11:48,038 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2196904, now seen corresponding path program 22 times [2020-08-22 22:11:48,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:48,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046627704] [2020-08-22 22:11:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-08-22 22:11:50,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046627704] [2020-08-22 22:11:50,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:50,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-08-22 22:11:50,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694839525] [2020-08-22 22:11:50,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-08-22 22:11:50,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-08-22 22:11:50,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 22:11:50,548 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 49 states. [2020-08-22 22:11:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:52,910 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2020-08-22 22:11:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-08-22 22:11:52,911 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2020-08-22 22:11:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:52,912 INFO L225 Difference]: With dead ends: 115 [2020-08-22 22:11:52,914 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 22:11:52,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=187, Invalid=4925, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 22:11:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 22:11:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-08-22 22:11:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 22:11:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-08-22 22:11:52,925 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 170 [2020-08-22 22:11:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:52,925 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-08-22 22:11:52,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-08-22 22:11:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-08-22 22:11:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 22:11:52,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:52,927 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:52,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 22:11:52,928 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1568113175, now seen corresponding path program 23 times [2020-08-22 22:11:52,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:52,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564183612] [2020-08-22 22:11:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:55,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-08-22 22:11:55,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564183612] [2020-08-22 22:11:55,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:55,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-08-22 22:11:55,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262491431] [2020-08-22 22:11:55,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 22:11:55,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 22:11:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 22:11:55,599 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 51 states. [2020-08-22 22:11:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:58,166 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-08-22 22:11:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-08-22 22:11:58,167 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2020-08-22 22:11:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:58,170 INFO L225 Difference]: With dead ends: 119 [2020-08-22 22:11:58,170 INFO L226 Difference]: Without dead ends: 114 [2020-08-22 22:11:58,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=195, Invalid=5355, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 22:11:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-22 22:11:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-22 22:11:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 22:11:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-08-22 22:11:58,180 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 177 [2020-08-22 22:11:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:58,181 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-08-22 22:11:58,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 22:11:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-08-22 22:11:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-08-22 22:11:58,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:58,182 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:58,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 22:11:58,183 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:58,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1126669510, now seen corresponding path program 24 times [2020-08-22 22:11:58,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:58,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651110009] [2020-08-22 22:11:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:11:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-08-22 22:12:00,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651110009] [2020-08-22 22:12:00,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:00,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-08-22 22:12:00,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314655560] [2020-08-22 22:12:00,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-08-22 22:12:00,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:00,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-08-22 22:12:00,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 22:12:00,824 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 53 states. [2020-08-22 22:12:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:03,560 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2020-08-22 22:12:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-08-22 22:12:03,561 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 184 [2020-08-22 22:12:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:03,563 INFO L225 Difference]: With dead ends: 123 [2020-08-22 22:12:03,563 INFO L226 Difference]: Without dead ends: 118 [2020-08-22 22:12:03,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=203, Invalid=5803, Unknown=0, NotChecked=0, Total=6006 [2020-08-22 22:12:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-22 22:12:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-08-22 22:12:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 22:12:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-08-22 22:12:03,572 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 184 [2020-08-22 22:12:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:03,572 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-08-22 22:12:03,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-08-22 22:12:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-08-22 22:12:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-08-22 22:12:03,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:03,574 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:03,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 22:12:03,574 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1932386427, now seen corresponding path program 25 times [2020-08-22 22:12:03,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:03,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607402638] [2020-08-22 22:12:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-08-22 22:12:06,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607402638] [2020-08-22 22:12:06,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:06,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 22:12:06,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098191997] [2020-08-22 22:12:06,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 22:12:06,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:06,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 22:12:06,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 22:12:06,520 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 55 states. [2020-08-22 22:12:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:09,529 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-08-22 22:12:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-08-22 22:12:09,530 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 191 [2020-08-22 22:12:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:09,532 INFO L225 Difference]: With dead ends: 127 [2020-08-22 22:12:09,532 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 22:12:09,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-08-22 22:12:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 22:12:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-08-22 22:12:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 22:12:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-08-22 22:12:09,541 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 191 [2020-08-22 22:12:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:09,542 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-08-22 22:12:09,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 22:12:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-08-22 22:12:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-08-22 22:12:09,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:09,543 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:09,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 22:12:09,544 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:09,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1732456756, now seen corresponding path program 26 times [2020-08-22 22:12:09,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:09,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957231014] [2020-08-22 22:12:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:09,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:12,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-08-22 22:12:12,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957231014] [2020-08-22 22:12:12,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:12,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-08-22 22:12:12,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376141769] [2020-08-22 22:12:12,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-08-22 22:12:12,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:12,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-08-22 22:12:12,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 22:12:12,878 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-08-22 22:12:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:16,118 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-08-22 22:12:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-08-22 22:12:16,118 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 198 [2020-08-22 22:12:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:16,121 INFO L225 Difference]: With dead ends: 131 [2020-08-22 22:12:16,121 INFO L226 Difference]: Without dead ends: 126 [2020-08-22 22:12:16,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=219, Invalid=6753, Unknown=0, NotChecked=0, Total=6972 [2020-08-22 22:12:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-22 22:12:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-08-22 22:12:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 22:12:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-08-22 22:12:16,130 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 198 [2020-08-22 22:12:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:16,131 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-08-22 22:12:16,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-08-22 22:12:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-08-22 22:12:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 22:12:16,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:16,133 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:16,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 22:12:16,133 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1780657907, now seen corresponding path program 27 times [2020-08-22 22:12:16,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:16,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216787591] [2020-08-22 22:12:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:19,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-08-22 22:12:19,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216787591] [2020-08-22 22:12:19,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:19,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-08-22 22:12:19,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572530851] [2020-08-22 22:12:19,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-08-22 22:12:19,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:19,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-08-22 22:12:19,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 22:12:19,670 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 59 states. [2020-08-22 22:12:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:23,200 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-08-22 22:12:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-08-22 22:12:23,201 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 205 [2020-08-22 22:12:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:23,203 INFO L225 Difference]: With dead ends: 135 [2020-08-22 22:12:23,203 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 22:12:23,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=227, Invalid=7255, Unknown=0, NotChecked=0, Total=7482 [2020-08-22 22:12:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 22:12:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-08-22 22:12:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 22:12:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-08-22 22:12:23,215 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 205 [2020-08-22 22:12:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:23,215 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-08-22 22:12:23,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-08-22 22:12:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-08-22 22:12:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 22:12:23,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:23,217 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:23,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 22:12:23,217 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:23,218 INFO L82 PathProgramCache]: Analyzing trace with hash -642725794, now seen corresponding path program 28 times [2020-08-22 22:12:23,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:23,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672581673] [2020-08-22 22:12:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-08-22 22:12:27,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672581673] [2020-08-22 22:12:27,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:27,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-08-22 22:12:27,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302498824] [2020-08-22 22:12:27,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-08-22 22:12:27,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-08-22 22:12:27,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-08-22 22:12:27,085 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 61 states. [2020-08-22 22:12:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:30,893 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-08-22 22:12:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-08-22 22:12:30,894 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 212 [2020-08-22 22:12:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:30,895 INFO L225 Difference]: With dead ends: 139 [2020-08-22 22:12:30,895 INFO L226 Difference]: Without dead ends: 134 [2020-08-22 22:12:30,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=235, Invalid=7775, Unknown=0, NotChecked=0, Total=8010 [2020-08-22 22:12:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-22 22:12:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-08-22 22:12:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 22:12:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-08-22 22:12:30,909 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 212 [2020-08-22 22:12:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:30,910 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-08-22 22:12:30,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-08-22 22:12:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-08-22 22:12:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-22 22:12:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:30,912 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:30,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 22:12:30,912 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1218916449, now seen corresponding path program 29 times [2020-08-22 22:12:30,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:30,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892480576] [2020-08-22 22:12:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:34,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-08-22 22:12:35,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892480576] [2020-08-22 22:12:35,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:35,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-08-22 22:12:35,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105057023] [2020-08-22 22:12:35,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-08-22 22:12:35,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-08-22 22:12:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 22:12:35,093 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 63 states. [2020-08-22 22:12:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:39,150 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2020-08-22 22:12:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-08-22 22:12:39,151 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 219 [2020-08-22 22:12:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:39,153 INFO L225 Difference]: With dead ends: 143 [2020-08-22 22:12:39,153 INFO L226 Difference]: Without dead ends: 138 [2020-08-22 22:12:39,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=243, Invalid=8313, Unknown=0, NotChecked=0, Total=8556 [2020-08-22 22:12:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-22 22:12:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-08-22 22:12:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 22:12:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-08-22 22:12:39,163 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 219 [2020-08-22 22:12:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:39,163 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-08-22 22:12:39,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-08-22 22:12:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-08-22 22:12:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-22 22:12:39,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:39,166 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:39,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 22:12:39,166 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:39,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:39,166 INFO L82 PathProgramCache]: Analyzing trace with hash 932597744, now seen corresponding path program 30 times [2020-08-22 22:12:39,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:39,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172106434] [2020-08-22 22:12:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-08-22 22:12:43,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172106434] [2020-08-22 22:12:43,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:43,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-08-22 22:12:43,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934621923] [2020-08-22 22:12:43,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-08-22 22:12:43,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:43,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-08-22 22:12:43,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 22:12:43,809 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 65 states. [2020-08-22 22:12:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:48,167 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-08-22 22:12:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-08-22 22:12:48,168 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 226 [2020-08-22 22:12:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:48,170 INFO L225 Difference]: With dead ends: 147 [2020-08-22 22:12:48,170 INFO L226 Difference]: Without dead ends: 142 [2020-08-22 22:12:48,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=251, Invalid=8869, Unknown=0, NotChecked=0, Total=9120 [2020-08-22 22:12:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-22 22:12:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-08-22 22:12:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-22 22:12:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-08-22 22:12:48,181 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 226 [2020-08-22 22:12:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:48,181 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-08-22 22:12:48,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-08-22 22:12:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-08-22 22:12:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-22 22:12:48,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:48,183 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:48,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 22:12:48,184 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1369285583, now seen corresponding path program 31 times [2020-08-22 22:12:48,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:48,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873354019] [2020-08-22 22:12:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-08-22 22:12:53,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873354019] [2020-08-22 22:12:53,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:12:53,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-08-22 22:12:53,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28022714] [2020-08-22 22:12:53,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-08-22 22:12:53,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:12:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-08-22 22:12:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 22:12:53,232 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 67 states. [2020-08-22 22:12:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:12:57,798 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-08-22 22:12:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-08-22 22:12:57,799 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 233 [2020-08-22 22:12:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:12:57,801 INFO L225 Difference]: With dead ends: 151 [2020-08-22 22:12:57,801 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 22:12:57,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=259, Invalid=9443, Unknown=0, NotChecked=0, Total=9702 [2020-08-22 22:12:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 22:12:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-08-22 22:12:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 22:12:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-08-22 22:12:57,812 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 233 [2020-08-22 22:12:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:12:57,813 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-08-22 22:12:57,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-08-22 22:12:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-08-22 22:12:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 22:12:57,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:12:57,815 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:12:57,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 22:12:57,815 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:12:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:12:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash -598776446, now seen corresponding path program 32 times [2020-08-22 22:12:57,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:12:57,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192714057] [2020-08-22 22:12:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:12:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:12:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:12:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:12:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:12:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:01,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-08-22 22:13:03,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192714057] [2020-08-22 22:13:03,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:13:03,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-08-22 22:13:03,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962181430] [2020-08-22 22:13:03,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-08-22 22:13:03,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-08-22 22:13:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2020-08-22 22:13:03,121 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 69 states. [2020-08-22 22:13:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:08,118 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-08-22 22:13:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-08-22 22:13:08,119 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 240 [2020-08-22 22:13:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:08,121 INFO L225 Difference]: With dead ends: 155 [2020-08-22 22:13:08,122 INFO L226 Difference]: Without dead ends: 150 [2020-08-22 22:13:08,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=267, Invalid=10035, Unknown=0, NotChecked=0, Total=10302 [2020-08-22 22:13:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-22 22:13:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-08-22 22:13:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 22:13:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-08-22 22:13:08,137 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 240 [2020-08-22 22:13:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:08,137 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-08-22 22:13:08,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-08-22 22:13:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-08-22 22:13:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-22 22:13:08,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:08,140 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:08,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 22:13:08,142 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2075915971, now seen corresponding path program 33 times [2020-08-22 22:13:08,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:08,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972528709] [2020-08-22 22:13:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:13:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:11,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-08-22 22:13:13,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972528709] [2020-08-22 22:13:13,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:13:13,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-08-22 22:13:13,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130117599] [2020-08-22 22:13:13,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-08-22 22:13:13,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-08-22 22:13:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2020-08-22 22:13:13,997 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 71 states. [2020-08-22 22:13:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:19,069 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2020-08-22 22:13:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-08-22 22:13:19,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 247 [2020-08-22 22:13:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:19,071 INFO L225 Difference]: With dead ends: 159 [2020-08-22 22:13:19,071 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 22:13:19,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=275, Invalid=10645, Unknown=0, NotChecked=0, Total=10920 [2020-08-22 22:13:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 22:13:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-08-22 22:13:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-22 22:13:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-08-22 22:13:19,082 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 247 [2020-08-22 22:13:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:19,082 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-08-22 22:13:19,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-08-22 22:13:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-08-22 22:13:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-22 22:13:19,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:19,085 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:19,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 22:13:19,085 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1673398548, now seen corresponding path program 34 times [2020-08-22 22:13:19,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:19,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82967956] [2020-08-22 22:13:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:13:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:22,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:23,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-08-22 22:13:25,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82967956] [2020-08-22 22:13:25,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:13:25,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-08-22 22:13:25,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210808200] [2020-08-22 22:13:25,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-08-22 22:13:25,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-08-22 22:13:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2020-08-22 22:13:25,206 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 73 states. [2020-08-22 22:13:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:30,573 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2020-08-22 22:13:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-08-22 22:13:30,574 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 254 [2020-08-22 22:13:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:30,576 INFO L225 Difference]: With dead ends: 163 [2020-08-22 22:13:30,576 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 22:13:30,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=283, Invalid=11273, Unknown=0, NotChecked=0, Total=11556 [2020-08-22 22:13:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 22:13:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-08-22 22:13:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 22:13:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-08-22 22:13:30,588 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 254 [2020-08-22 22:13:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:30,588 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-08-22 22:13:30,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-08-22 22:13:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-08-22 22:13:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-08-22 22:13:30,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:30,590 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:30,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 22:13:30,591 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1244110677, now seen corresponding path program 35 times [2020-08-22 22:13:30,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:30,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75945936] [2020-08-22 22:13:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:13:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:32,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-08-22 22:13:37,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75945936] [2020-08-22 22:13:37,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:13:37,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-08-22 22:13:37,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749706184] [2020-08-22 22:13:37,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-08-22 22:13:37,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-08-22 22:13:37,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 22:13:37,136 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 75 states. [2020-08-22 22:13:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:42,777 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-08-22 22:13:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-08-22 22:13:42,778 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 261 [2020-08-22 22:13:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:42,780 INFO L225 Difference]: With dead ends: 167 [2020-08-22 22:13:42,780 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 22:13:42,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=291, Invalid=11919, Unknown=0, NotChecked=0, Total=12210 [2020-08-22 22:13:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 22:13:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-22 22:13:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 22:13:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-08-22 22:13:42,791 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 261 [2020-08-22 22:13:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:42,791 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-08-22 22:13:42,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-08-22 22:13:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-08-22 22:13:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 22:13:42,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:42,794 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:42,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-22 22:13:42,794 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash -607896922, now seen corresponding path program 36 times [2020-08-22 22:13:42,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:42,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916315463] [2020-08-22 22:13:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:13:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-08-22 22:13:49,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916315463] [2020-08-22 22:13:49,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:13:49,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-08-22 22:13:49,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943303464] [2020-08-22 22:13:49,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-08-22 22:13:49,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:49,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-08-22 22:13:49,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2020-08-22 22:13:49,540 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 77 states. [2020-08-22 22:13:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:55,395 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-08-22 22:13:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-08-22 22:13:55,396 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 268 [2020-08-22 22:13:55,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:55,398 INFO L225 Difference]: With dead ends: 171 [2020-08-22 22:13:55,398 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 22:13:55,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=299, Invalid=12583, Unknown=0, NotChecked=0, Total=12882 [2020-08-22 22:13:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 22:13:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-08-22 22:13:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-22 22:13:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-08-22 22:13:55,409 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 268 [2020-08-22 22:13:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:55,409 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-08-22 22:13:55,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-08-22 22:13:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-08-22 22:13:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-22 22:13:55,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:55,412 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:55,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-22 22:13:55,412 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:55,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1852265959, now seen corresponding path program 37 times [2020-08-22 22:13:55,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:55,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614000683] [2020-08-22 22:13:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:13:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:59,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:13:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-08-22 22:14:02,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614000683] [2020-08-22 22:14:02,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:02,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-08-22 22:14:02,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085128726] [2020-08-22 22:14:02,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-08-22 22:14:02,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:02,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-08-22 22:14:02,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2020-08-22 22:14:02,964 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 79 states. [2020-08-22 22:14:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:09,651 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2020-08-22 22:14:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-08-22 22:14:09,652 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 275 [2020-08-22 22:14:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:09,654 INFO L225 Difference]: With dead ends: 175 [2020-08-22 22:14:09,655 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 22:14:09,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=307, Invalid=13265, Unknown=0, NotChecked=0, Total=13572 [2020-08-22 22:14:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 22:14:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-08-22 22:14:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-08-22 22:14:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-08-22 22:14:09,666 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 275 [2020-08-22 22:14:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:09,666 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-08-22 22:14:09,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-08-22 22:14:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-08-22 22:14:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-08-22 22:14:09,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:09,668 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:14:09,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-22 22:14:09,668 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1002177992, now seen corresponding path program 38 times [2020-08-22 22:14:09,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:09,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405516777] [2020-08-22 22:14:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:09,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:14:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:11,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:13,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-08-22 22:14:17,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405516777] [2020-08-22 22:14:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-08-22 22:14:17,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200961894] [2020-08-22 22:14:17,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-08-22 22:14:17,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-08-22 22:14:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2020-08-22 22:14:17,710 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 81 states. [2020-08-22 22:14:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:24,681 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-08-22 22:14:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-08-22 22:14:24,683 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 282 [2020-08-22 22:14:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:24,685 INFO L225 Difference]: With dead ends: 179 [2020-08-22 22:14:24,685 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 22:14:24,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=315, Invalid=13965, Unknown=0, NotChecked=0, Total=14280 [2020-08-22 22:14:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 22:14:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-08-22 22:14:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 22:14:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-08-22 22:14:24,696 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 282 [2020-08-22 22:14:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:24,696 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-08-22 22:14:24,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-08-22 22:14:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-08-22 22:14:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-08-22 22:14:24,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:24,699 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:14:24,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-22 22:14:24,699 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:24,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1732057721, now seen corresponding path program 39 times [2020-08-22 22:14:24,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:24,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388649927] [2020-08-22 22:14:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:24,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:14:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:26,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:29,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:29,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-08-22 22:14:33,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388649927] [2020-08-22 22:14:33,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:33,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-08-22 22:14:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141412667] [2020-08-22 22:14:33,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-08-22 22:14:33,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-08-22 22:14:33,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2020-08-22 22:14:33,759 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 83 states. [2020-08-22 22:14:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:41,156 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2020-08-22 22:14:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-08-22 22:14:41,157 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 289 [2020-08-22 22:14:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:41,160 INFO L225 Difference]: With dead ends: 183 [2020-08-22 22:14:41,160 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 22:14:41,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=323, Invalid=14683, Unknown=0, NotChecked=0, Total=15006 [2020-08-22 22:14:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 22:14:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-08-22 22:14:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-22 22:14:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-08-22 22:14:41,172 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 289 [2020-08-22 22:14:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:41,172 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-08-22 22:14:41,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-08-22 22:14:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-08-22 22:14:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-08-22 22:14:41,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:41,175 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:14:41,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-22 22:14:41,175 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 253708234, now seen corresponding path program 40 times [2020-08-22 22:14:41,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:41,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36656983] [2020-08-22 22:14:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:14:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:44,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:45,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:48,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-08-22 22:14:50,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36656983] [2020-08-22 22:14:50,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:50,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-08-22 22:14:50,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221487878] [2020-08-22 22:14:50,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-08-22 22:14:50,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-08-22 22:14:50,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2020-08-22 22:14:50,802 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 85 states. [2020-08-22 22:14:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:58,699 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2020-08-22 22:14:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-08-22 22:14:58,700 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 296 [2020-08-22 22:14:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:58,703 INFO L225 Difference]: With dead ends: 187 [2020-08-22 22:14:58,703 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 22:14:58,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=331, Invalid=15419, Unknown=0, NotChecked=0, Total=15750 [2020-08-22 22:14:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 22:14:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-08-22 22:14:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 22:14:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-08-22 22:14:58,716 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 296 [2020-08-22 22:14:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:58,716 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-08-22 22:14:58,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-08-22 22:14:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-08-22 22:14:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-22 22:14:58,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:58,719 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:14:58,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-22 22:14:58,721 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash -580195061, now seen corresponding path program 41 times [2020-08-22 22:14:58,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:58,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049879628] [2020-08-22 22:14:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:14:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:01,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:05,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-08-22 22:15:08,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049879628] [2020-08-22 22:15:08,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:08,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-08-22 22:15:08,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564222307] [2020-08-22 22:15:08,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-08-22 22:15:08,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:08,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-08-22 22:15:08,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2020-08-22 22:15:08,717 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 87 states. [2020-08-22 22:15:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:16,744 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-08-22 22:15:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-08-22 22:15:16,745 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 303 [2020-08-22 22:15:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:16,747 INFO L225 Difference]: With dead ends: 191 [2020-08-22 22:15:16,747 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 22:15:16,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=339, Invalid=16173, Unknown=0, NotChecked=0, Total=16512 [2020-08-22 22:15:16,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 22:15:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-22 22:15:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-22 22:15:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-08-22 22:15:16,759 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 303 [2020-08-22 22:15:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:16,760 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-08-22 22:15:16,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-08-22 22:15:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-08-22 22:15:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-22 22:15:16,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:16,762 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:15:16,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-08-22 22:15:16,763 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash 540549980, now seen corresponding path program 42 times [2020-08-22 22:15:16,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:16,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785093267] [2020-08-22 22:15:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:15:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:20,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:20,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:21,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-08-22 22:15:26,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785093267] [2020-08-22 22:15:26,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:26,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-08-22 22:15:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375076265] [2020-08-22 22:15:26,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-08-22 22:15:26,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-08-22 22:15:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2020-08-22 22:15:26,907 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 89 states. [2020-08-22 22:15:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:35,602 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2020-08-22 22:15:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-08-22 22:15:35,603 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 310 [2020-08-22 22:15:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:35,606 INFO L225 Difference]: With dead ends: 195 [2020-08-22 22:15:35,606 INFO L226 Difference]: Without dead ends: 190 [2020-08-22 22:15:35,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=347, Invalid=16945, Unknown=0, NotChecked=0, Total=17292 [2020-08-22 22:15:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-22 22:15:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-08-22 22:15:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 22:15:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-08-22 22:15:35,616 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 310 [2020-08-22 22:15:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:35,617 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-08-22 22:15:35,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-08-22 22:15:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-08-22 22:15:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 22:15:35,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:35,620 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:15:35,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-08-22 22:15:35,620 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1548563043, now seen corresponding path program 43 times [2020-08-22 22:15:35,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:35,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581200882] [2020-08-22 22:15:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:15:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:42,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:43,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-08-22 22:15:46,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581200882] [2020-08-22 22:15:46,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:46,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-08-22 22:15:46,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030196909] [2020-08-22 22:15:46,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-08-22 22:15:46,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:46,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-08-22 22:15:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2020-08-22 22:15:46,242 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 91 states. [2020-08-22 22:15:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:55,632 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2020-08-22 22:15:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-08-22 22:15:55,634 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 317 [2020-08-22 22:15:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:55,636 INFO L225 Difference]: With dead ends: 199 [2020-08-22 22:15:55,636 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 22:15:55,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=355, Invalid=17735, Unknown=0, NotChecked=0, Total=18090 [2020-08-22 22:15:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 22:15:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-08-22 22:15:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-08-22 22:15:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-08-22 22:15:55,648 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 317 [2020-08-22 22:15:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:55,649 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-08-22 22:15:55,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-08-22 22:15:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-08-22 22:15:55,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-22 22:15:55,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:55,651 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:15:55,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-08-22 22:15:55,652 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:55,652 INFO L82 PathProgramCache]: Analyzing trace with hash -848261906, now seen corresponding path program 44 times [2020-08-22 22:15:55,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:55,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069545975] [2020-08-22 22:15:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:15:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:57,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:01,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:04,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-08-22 22:16:07,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069545975] [2020-08-22 22:16:07,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:16:07,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-08-22 22:16:07,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61056642] [2020-08-22 22:16:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-08-22 22:16:07,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:16:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-08-22 22:16:07,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2020-08-22 22:16:07,215 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 93 states. [2020-08-22 22:16:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:16:17,550 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2020-08-22 22:16:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-08-22 22:16:17,552 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 324 [2020-08-22 22:16:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:16:17,554 INFO L225 Difference]: With dead ends: 203 [2020-08-22 22:16:17,554 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 22:16:17,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=363, Invalid=18543, Unknown=0, NotChecked=0, Total=18906 [2020-08-22 22:16:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 22:16:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-08-22 22:16:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-22 22:16:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-08-22 22:16:17,565 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 324 [2020-08-22 22:16:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:16:17,565 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-08-22 22:16:17,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-08-22 22:16:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-08-22 22:16:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-22 22:16:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:16:17,568 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:16:17,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-08-22 22:16:17,568 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:16:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:16:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1227441105, now seen corresponding path program 45 times [2020-08-22 22:16:17,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:16:17,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240839153] [2020-08-22 22:16:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:16:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:16:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:16:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:19,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:28,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-08-22 22:16:30,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240839153] [2020-08-22 22:16:30,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:16:30,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-08-22 22:16:30,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891608859] [2020-08-22 22:16:30,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-08-22 22:16:30,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:16:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-08-22 22:16:30,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2020-08-22 22:16:30,025 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 95 states. [2020-08-22 22:16:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:16:42,139 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2020-08-22 22:16:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-08-22 22:16:42,141 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 331 [2020-08-22 22:16:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:16:42,143 INFO L225 Difference]: With dead ends: 207 [2020-08-22 22:16:42,143 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 22:16:42,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=371, Invalid=19369, Unknown=0, NotChecked=0, Total=19740 [2020-08-22 22:16:42,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 22:16:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-08-22 22:16:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-22 22:16:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-08-22 22:16:42,155 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 331 [2020-08-22 22:16:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:16:42,155 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-08-22 22:16:42,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-08-22 22:16:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-08-22 22:16:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-08-22 22:16:42,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:16:42,158 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:16:42,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-08-22 22:16:42,158 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:16:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:16:42,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1588233344, now seen corresponding path program 46 times [2020-08-22 22:16:42,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:16:42,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217284968] [2020-08-22 22:16:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:16:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:16:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:16:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:43,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:44,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:54,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:16:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:16:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-08-22 22:16:56,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217284968] [2020-08-22 22:16:56,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:16:56,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-08-22 22:16:56,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97359103] [2020-08-22 22:16:56,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-08-22 22:16:56,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:16:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-08-22 22:16:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2020-08-22 22:16:56,038 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 97 states. [2020-08-22 22:17:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:17:08,825 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2020-08-22 22:17:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-08-22 22:17:08,826 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 338 [2020-08-22 22:17:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:17:08,828 INFO L225 Difference]: With dead ends: 211 [2020-08-22 22:17:08,828 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 22:17:08,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=379, Invalid=20213, Unknown=0, NotChecked=0, Total=20592 [2020-08-22 22:17:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 22:17:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 22:17:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 22:17:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-08-22 22:17:08,838 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 338 [2020-08-22 22:17:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:17:08,839 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-08-22 22:17:08,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-08-22 22:17:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-08-22 22:17:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-08-22 22:17:08,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:17:08,842 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:17:08,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-08-22 22:17:08,842 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:17:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:17:08,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1033418945, now seen corresponding path program 47 times [2020-08-22 22:17:08,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:17:08,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339280348] [2020-08-22 22:17:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:17:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:17:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:17:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:13,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:16,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:20,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:21,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2020-08-22 22:17:23,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339280348] [2020-08-22 22:17:23,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:17:23,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-08-22 22:17:23,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906696181] [2020-08-22 22:17:23,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-08-22 22:17:23,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:17:23,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-08-22 22:17:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2020-08-22 22:17:23,809 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 99 states. [2020-08-22 22:17:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:17:37,783 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-08-22 22:17:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-08-22 22:17:37,785 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 345 [2020-08-22 22:17:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:17:37,787 INFO L225 Difference]: With dead ends: 215 [2020-08-22 22:17:37,787 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 22:17:37,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=387, Invalid=21075, Unknown=0, NotChecked=0, Total=21462 [2020-08-22 22:17:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 22:17:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-08-22 22:17:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-22 22:17:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-08-22 22:17:37,799 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 345 [2020-08-22 22:17:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:17:37,799 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-08-22 22:17:37,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-08-22 22:17:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-08-22 22:17:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-08-22 22:17:37,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:17:37,802 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:17:37,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-08-22 22:17:37,802 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:17:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:17:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1916270062, now seen corresponding path program 48 times [2020-08-22 22:17:37,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:17:37,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219856603] [2020-08-22 22:17:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:17:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:17:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:17:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:38,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:39,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:43,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:43,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:45,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:17:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 4608 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-08-22 22:17:53,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219856603] [2020-08-22 22:17:53,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:17:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-08-22 22:17:53,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128196234] [2020-08-22 22:17:53,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-08-22 22:17:53,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:17:53,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-08-22 22:17:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2020-08-22 22:17:53,415 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 101 states. [2020-08-22 22:18:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:18:10,005 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-08-22 22:18:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-08-22 22:18:10,007 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 352 [2020-08-22 22:18:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:18:10,009 INFO L225 Difference]: With dead ends: 219 [2020-08-22 22:18:10,009 INFO L226 Difference]: Without dead ends: 214 [2020-08-22 22:18:10,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=395, Invalid=21955, Unknown=0, NotChecked=0, Total=22350 [2020-08-22 22:18:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-22 22:18:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-22 22:18:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-22 22:18:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-08-22 22:18:10,024 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 352 [2020-08-22 22:18:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:18:10,025 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-08-22 22:18:10,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-08-22 22:18:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-08-22 22:18:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-08-22 22:18:10,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:18:10,027 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:18:10,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-08-22 22:18:10,028 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:18:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:18:10,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2001026221, now seen corresponding path program 49 times [2020-08-22 22:18:10,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:18:10,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334356831] [2020-08-22 22:18:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:18:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:18:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:18:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:15,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:19,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:20,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:21,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 4802 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-08-22 22:18:28,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334356831] [2020-08-22 22:18:28,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:18:28,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-08-22 22:18:28,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474080663] [2020-08-22 22:18:28,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-08-22 22:18:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:18:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-08-22 22:18:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2020-08-22 22:18:28,192 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 103 states. [2020-08-22 22:18:47,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:18:47,278 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2020-08-22 22:18:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-08-22 22:18:47,280 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 359 [2020-08-22 22:18:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:18:47,283 INFO L225 Difference]: With dead ends: 223 [2020-08-22 22:18:47,283 INFO L226 Difference]: Without dead ends: 218 [2020-08-22 22:18:47,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=403, Invalid=22853, Unknown=0, NotChecked=0, Total=23256 [2020-08-22 22:18:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-22 22:18:47,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-08-22 22:18:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 22:18:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-08-22 22:18:47,296 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 359 [2020-08-22 22:18:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:18:47,296 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-08-22 22:18:47,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-08-22 22:18:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-08-22 22:18:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-08-22 22:18:47,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:18:47,299 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:18:47,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-08-22 22:18:47,299 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:18:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:18:47,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2035606108, now seen corresponding path program 50 times [2020-08-22 22:18:47,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:18:47,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011189565] [2020-08-22 22:18:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:18:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:18:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:18:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:50,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:56,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:59,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:18:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 5000 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2020-08-22 22:19:06,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011189565] [2020-08-22 22:19:06,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:06,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-08-22 22:19:06,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311243711] [2020-08-22 22:19:06,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-08-22 22:19:06,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-08-22 22:19:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-08-22 22:19:06,343 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 105 states. [2020-08-22 22:19:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:23,939 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-08-22 22:19:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-08-22 22:19:23,942 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 366 [2020-08-22 22:19:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:23,944 INFO L225 Difference]: With dead ends: 227 [2020-08-22 22:19:23,944 INFO L226 Difference]: Without dead ends: 222 [2020-08-22 22:19:23,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=411, Invalid=23769, Unknown=0, NotChecked=0, Total=24180 [2020-08-22 22:19:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-08-22 22:19:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-08-22 22:19:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-22 22:19:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-08-22 22:19:23,956 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 366 [2020-08-22 22:19:23,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:23,956 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-08-22 22:19:23,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-08-22 22:19:23,956 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-08-22 22:19:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-08-22 22:19:23,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:23,959 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:19:23,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-08-22 22:19:23,959 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:23,960 INFO L82 PathProgramCache]: Analyzing trace with hash 318692325, now seen corresponding path program 51 times [2020-08-22 22:19:23,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:23,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53063682] [2020-08-22 22:19:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:19:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:38,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:39,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:19:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-08-22 22:19:43,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53063682] [2020-08-22 22:19:43,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:43,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-08-22 22:19:43,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775799069] [2020-08-22 22:19:43,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-08-22 22:19:43,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:43,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-08-22 22:19:43,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2020-08-22 22:19:43,075 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 107 states. [2020-08-22 22:20:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:02,362 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2020-08-22 22:20:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-08-22 22:20:02,365 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2020-08-22 22:20:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:02,367 INFO L225 Difference]: With dead ends: 231 [2020-08-22 22:20:02,367 INFO L226 Difference]: Without dead ends: 226 [2020-08-22 22:20:02,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=419, Invalid=24703, Unknown=0, NotChecked=0, Total=25122 [2020-08-22 22:20:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-08-22 22:20:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-08-22 22:20:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-22 22:20:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-08-22 22:20:02,379 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 373 [2020-08-22 22:20:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:02,379 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-08-22 22:20:02,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-08-22 22:20:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-08-22 22:20:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-08-22 22:20:02,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:02,382 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:02,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-08-22 22:20:02,382 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash -415908042, now seen corresponding path program 52 times [2020-08-22 22:20:02,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:02,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566564312] [2020-08-22 22:20:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:20:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:06,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:10,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:14,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:15,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:16,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 5408 refuted. 0 times theorem prover too weak. 4082 trivial. 0 not checked. [2020-08-22 22:20:22,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566564312] [2020-08-22 22:20:22,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:20:22,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-08-22 22:20:22,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640255235] [2020-08-22 22:20:22,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-08-22 22:20:22,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-08-22 22:20:22,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2020-08-22 22:20:22,819 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 109 states. [2020-08-22 22:20:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:43,438 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2020-08-22 22:20:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-08-22 22:20:43,440 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 380 [2020-08-22 22:20:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:43,441 INFO L225 Difference]: With dead ends: 235 [2020-08-22 22:20:43,442 INFO L226 Difference]: Without dead ends: 230 [2020-08-22 22:20:43,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=427, Invalid=25655, Unknown=0, NotChecked=0, Total=26082 [2020-08-22 22:20:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-22 22:20:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-08-22 22:20:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 22:20:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-08-22 22:20:43,452 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 380 [2020-08-22 22:20:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:43,453 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-08-22 22:20:43,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-08-22 22:20:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-08-22 22:20:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-08-22 22:20:43,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:43,456 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:43,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-08-22 22:20:43,456 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2128149897, now seen corresponding path program 53 times [2020-08-22 22:20:43,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:43,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836977315] [2020-08-22 22:20:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:20:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:48,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:49,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:53,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:54,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:59,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:20:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 5618 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2020-08-22 22:21:03,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836977315] [2020-08-22 22:21:03,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:21:03,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-08-22 22:21:03,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525189550] [2020-08-22 22:21:03,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-08-22 22:21:03,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:21:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-08-22 22:21:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2020-08-22 22:21:03,958 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 111 states. [2020-08-22 22:21:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:21:26,046 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2020-08-22 22:21:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-08-22 22:21:26,049 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 387 [2020-08-22 22:21:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:21:26,051 INFO L225 Difference]: With dead ends: 239 [2020-08-22 22:21:26,051 INFO L226 Difference]: Without dead ends: 234 [2020-08-22 22:21:26,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=435, Invalid=26625, Unknown=0, NotChecked=0, Total=27060 [2020-08-22 22:21:26,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-22 22:21:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-08-22 22:21:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-22 22:21:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-08-22 22:21:26,062 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 387 [2020-08-22 22:21:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:21:26,062 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-08-22 22:21:26,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-08-22 22:21:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-08-22 22:21:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-08-22 22:21:26,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:21:26,065 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:21:26,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-08-22 22:21:26,065 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:21:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:21:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1085673784, now seen corresponding path program 54 times [2020-08-22 22:21:26,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:21:26,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386058712] [2020-08-22 22:21:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:21:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:21:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:21:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:37,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:38,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:39,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:44,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:21:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:21:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2020-08-22 22:21:48,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386058712] [2020-08-22 22:21:48,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:21:48,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-08-22 22:21:48,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041279944] [2020-08-22 22:21:48,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-08-22 22:21:48,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:21:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-08-22 22:21:48,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2020-08-22 22:21:48,303 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 113 states. [2020-08-22 22:22:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:22:11,648 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2020-08-22 22:22:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-08-22 22:22:11,650 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 394 [2020-08-22 22:22:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:22:11,651 INFO L225 Difference]: With dead ends: 243 [2020-08-22 22:22:11,652 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 22:22:11,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=443, Invalid=27613, Unknown=0, NotChecked=0, Total=28056 [2020-08-22 22:22:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 22:22:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-22 22:22:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 22:22:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2020-08-22 22:22:11,663 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 394 [2020-08-22 22:22:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:22:11,663 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2020-08-22 22:22:11,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-08-22 22:22:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2020-08-22 22:22:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-08-22 22:22:11,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:22:11,666 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:22:11,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-08-22 22:22:11,667 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:22:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:22:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1577765111, now seen corresponding path program 55 times [2020-08-22 22:22:11,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:22:11,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043697532] [2020-08-22 22:22:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:22:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:22:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:22:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:12,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:13,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:14,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:15,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:17,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:21,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:21,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:24,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 6050 refuted. 0 times theorem prover too weak. 4565 trivial. 0 not checked. [2020-08-22 22:22:34,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043697532] [2020-08-22 22:22:34,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:22:34,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2020-08-22 22:22:34,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118800107] [2020-08-22 22:22:34,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-08-22 22:22:34,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:22:34,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-08-22 22:22:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2020-08-22 22:22:34,947 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand 115 states. [2020-08-22 22:22:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:22:58,590 INFO L93 Difference]: Finished difference Result 247 states and 248 transitions. [2020-08-22 22:22:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-08-22 22:22:58,593 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 401 [2020-08-22 22:22:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:22:58,594 INFO L225 Difference]: With dead ends: 247 [2020-08-22 22:22:58,594 INFO L226 Difference]: Without dead ends: 242 [2020-08-22 22:22:58,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=451, Invalid=28619, Unknown=0, NotChecked=0, Total=29070 [2020-08-22 22:22:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-22 22:22:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-22 22:22:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-22 22:22:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2020-08-22 22:22:58,606 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 401 [2020-08-22 22:22:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:22:58,606 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2020-08-22 22:22:58,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-08-22 22:22:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2020-08-22 22:22:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-08-22 22:22:58,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:22:58,609 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:22:58,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-08-22 22:22:58,609 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:22:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:22:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1865831334, now seen corresponding path program 56 times [2020-08-22 22:22:58,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:22:58,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580789219] [2020-08-22 22:22:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:22:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:22:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:22:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:22:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:22:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:00,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:08,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:15,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:18,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:19,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 6272 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2020-08-22 22:23:22,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580789219] [2020-08-22 22:23:22,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:23:22,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2020-08-22 22:23:22,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102094396] [2020-08-22 22:23:22,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-08-22 22:23:22,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:23:22,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-08-22 22:23:22,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2020-08-22 22:23:22,480 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand 117 states. [2020-08-22 22:23:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:23:48,722 INFO L93 Difference]: Finished difference Result 251 states and 252 transitions. [2020-08-22 22:23:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-08-22 22:23:48,725 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 408 [2020-08-22 22:23:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:23:48,727 INFO L225 Difference]: With dead ends: 251 [2020-08-22 22:23:48,727 INFO L226 Difference]: Without dead ends: 246 [2020-08-22 22:23:48,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=459, Invalid=29643, Unknown=0, NotChecked=0, Total=30102 [2020-08-22 22:23:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-22 22:23:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-08-22 22:23:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-22 22:23:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2020-08-22 22:23:48,739 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 408 [2020-08-22 22:23:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:23:48,739 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2020-08-22 22:23:48,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-08-22 22:23:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2020-08-22 22:23:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-08-22 22:23:48,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:23:48,742 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:23:48,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-08-22 22:23:48,742 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:23:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:23:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1848342939, now seen corresponding path program 57 times [2020-08-22 22:23:48,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:23:48,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842811479] [2020-08-22 22:23:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:23:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:23:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:23:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:50,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:51,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:52,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:54,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:56,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:23:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:23:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:24:07,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:24:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat