/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:30:06,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:30:06,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:30:07,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:30:07,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:30:07,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:30:07,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:30:07,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:30:07,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:30:07,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:30:07,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:30:07,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:30:07,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:30:07,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:30:07,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:30:07,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:30:07,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:30:07,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:30:07,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:30:07,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:30:07,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:30:07,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:30:07,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:30:07,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:30:07,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:30:07,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:30:07,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:30:07,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:30:07,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:30:07,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:30:07,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:30:07,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:30:07,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:30:07,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:30:07,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:30:07,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:30:07,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:30:07,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:30:07,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:30:07,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:30:07,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:30:07,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:30:07,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:30:07,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:30:07,065 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:30:07,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:30:07,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:30:07,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:30:07,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:30:07,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:30:07,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:30:07,066 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:30:07,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:30:07,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:30:07,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:30:07,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:30:07,580 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:30:07,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-04 16:30:07,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca761cd6/e3d7c5ea409e420a91602e21ce9a081e/FLAGd9864e3a0 [2020-09-04 16:30:08,260 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:30:08,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-04 16:30:08,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca761cd6/e3d7c5ea409e420a91602e21ce9a081e/FLAGd9864e3a0 [2020-09-04 16:30:08,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca761cd6/e3d7c5ea409e420a91602e21ce9a081e [2020-09-04 16:30:08,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:30:08,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:30:08,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:30:08,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:30:08,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:30:08,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08, skipping insertion in model container [2020-09-04 16:30:08,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:30:08,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:30:08,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:30:08,886 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:30:08,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:30:08,931 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:30:08,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08 WrapperNode [2020-09-04 16:30:08,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:30:08,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:30:08,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:30:08,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:30:08,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... [2020-09-04 16:30:08,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:30:08,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:30:08,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:30:08,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:30:08,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:30:09,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:30:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:30:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 16:30:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:30:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 16:30:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:30:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 16:30:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:30:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:30:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:30:09,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:30:09,339 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:30:09,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:30:09 BoogieIcfgContainer [2020-09-04 16:30:09,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:30:09,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:30:09,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:30:09,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:30:09,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:30:08" (1/3) ... [2020-09-04 16:30:09,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebeba1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:30:09, skipping insertion in model container [2020-09-04 16:30:09,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:08" (2/3) ... [2020-09-04 16:30:09,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebeba1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:30:09, skipping insertion in model container [2020-09-04 16:30:09,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:30:09" (3/3) ... [2020-09-04 16:30:09,357 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-04 16:30:09,370 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:30:09,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:30:09,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:30:09,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:30:09,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:30:09,436 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:30:09,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:30:09,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:30:09,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:30:09,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:30:09,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:30:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 16:30:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:30:09,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:09,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:09,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-04 16:30:09,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:09,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920937275] [2020-09-04 16:30:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:09,563 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:30:09,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920937275] [2020-09-04 16:30:09,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:09,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:30:09,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322381695] [2020-09-04 16:30:09,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:30:09,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:30:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:30:09,913 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-04 16:30:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:09,997 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-04 16:30:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:30:10,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 16:30:10,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:10,014 INFO L225 Difference]: With dead ends: 37 [2020-09-04 16:30:10,014 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 16:30:10,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:30:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 16:30:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 16:30:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 16:30:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 16:30:10,070 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-04 16:30:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:10,071 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 16:30:10,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:30:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 16:30:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 16:30:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:10,074 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] [2020-09-04 16:30:10,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:30:10,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-04 16:30:10,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:10,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229280189] [2020-09-04 16:30:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:10,079 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:30:10,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229280189] [2020-09-04 16:30:10,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:10,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:30:10,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735409552] [2020-09-04 16:30:10,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:30:10,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:10,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:30:10,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:30:10,318 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-04 16:30:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:10,427 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 16:30:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:30:10,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 16:30:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:10,431 INFO L225 Difference]: With dead ends: 31 [2020-09-04 16:30:10,431 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 16:30:10,434 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 [2020-09-04 16:30:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 16:30:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 16:30:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 16:30:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 16:30:10,456 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-04 16:30:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:10,456 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 16:30:10,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:30:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 16:30:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:30:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:10,460 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] [2020-09-04 16:30:10,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:30:10,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-04 16:30:10,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:10,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98753377] [2020-09-04 16:30:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:10,470 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:30:10,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98753377] [2020-09-04 16:30:10,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:10,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:30:10,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380545699] [2020-09-04 16:30:10,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:30:10,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:30:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:30:10,800 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 16:30:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:10,933 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-04 16:30:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:30:10,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-04 16:30:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:10,935 INFO L225 Difference]: With dead ends: 35 [2020-09-04 16:30:10,935 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 16:30:10,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 16:30:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 16:30:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 16:30:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 16:30:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-04 16:30:10,947 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-04 16:30:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:10,947 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-04 16:30:10,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:30:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-04 16:30:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 16:30:10,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:10,949 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] [2020-09-04 16:30:10,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:30:10,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:10,950 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-04 16:30:10,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:10,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214871360] [2020-09-04 16:30:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:10,953 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 16:30:11,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214871360] [2020-09-04 16:30:11,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:11,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:30:11,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849318640] [2020-09-04 16:30:11,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:30:11,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:30:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:30:11,304 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-04 16:30:11,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:11,449 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-04 16:30:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:30:11,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-04 16:30:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:11,451 INFO L225 Difference]: With dead ends: 39 [2020-09-04 16:30:11,451 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 16:30:11,452 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 [2020-09-04 16:30:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 16:30:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-04 16:30:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 16:30:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-04 16:30:11,462 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-04 16:30:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:11,463 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-04 16:30:11,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:30:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-04 16:30:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 16:30:11,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:11,465 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] [2020-09-04 16:30:11,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:30:11,465 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-04 16:30:11,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:11,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163173890] [2020-09-04 16:30:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:11,469 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 16:30:11,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163173890] [2020-09-04 16:30:11,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:11,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:30:11,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770382299] [2020-09-04 16:30:11,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:30:11,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:11,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:30:11,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:30:11,782 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-04 16:30:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:11,982 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-04 16:30:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 16:30:11,983 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-04 16:30:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:11,984 INFO L225 Difference]: With dead ends: 43 [2020-09-04 16:30:11,985 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 16:30:11,986 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 [2020-09-04 16:30:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 16:30:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 16:30:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 16:30:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-04 16:30:11,995 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-04 16:30:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:11,996 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-04 16:30:11,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:30:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-04 16:30:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 16:30:11,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:11,998 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] [2020-09-04 16:30:11,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:30:11,999 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-04 16:30:12,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:12,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325061587] [2020-09-04 16:30:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:12,002 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 16:30:12,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325061587] [2020-09-04 16:30:12,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:12,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 16:30:12,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906261620] [2020-09-04 16:30:12,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 16:30:12,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:12,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 16:30:12,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:30:12,378 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-04 16:30:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:12,601 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 16:30:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 16:30:12,602 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-04 16:30:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:12,603 INFO L225 Difference]: With dead ends: 47 [2020-09-04 16:30:12,604 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 16:30:12,605 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 [2020-09-04 16:30:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 16:30:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 16:30:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 16:30:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-04 16:30:12,613 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-04 16:30:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:12,613 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-04 16:30:12,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 16:30:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-04 16:30:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 16:30:12,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:12,616 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] [2020-09-04 16:30:12,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:30:12,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-04 16:30:12,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:12,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645762600] [2020-09-04 16:30:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:12,619 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-04 16:30:13,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645762600] [2020-09-04 16:30:13,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:13,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:30:13,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629606705] [2020-09-04 16:30:13,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:30:13,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:30:13,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:30:13,095 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-04 16:30:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:13,460 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-04 16:30:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 16:30:13,461 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-04 16:30:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:13,462 INFO L225 Difference]: With dead ends: 51 [2020-09-04 16:30:13,462 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 16:30:13,463 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 [2020-09-04 16:30:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 16:30:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 16:30:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 16:30:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-04 16:30:13,472 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-04 16:30:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:13,472 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-04 16:30:13,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:30:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-04 16:30:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 16:30:13,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:13,475 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] [2020-09-04 16:30:13,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:30:13,475 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-04 16:30:13,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:13,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657165329] [2020-09-04 16:30:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:13,478 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 16:30:14,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657165329] [2020-09-04 16:30:14,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:14,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 16:30:14,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634296369] [2020-09-04 16:30:14,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 16:30:14,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:14,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 16:30:14,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:30:14,010 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-04 16:30:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:14,353 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-04 16:30:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 16:30:14,354 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-04 16:30:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:14,356 INFO L225 Difference]: With dead ends: 55 [2020-09-04 16:30:14,356 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 16:30:14,357 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 [2020-09-04 16:30:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 16:30:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-04 16:30:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 16:30:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-04 16:30:14,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-04 16:30:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:14,366 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-04 16:30:14,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 16:30:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-04 16:30:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-04 16:30:14,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:14,368 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] [2020-09-04 16:30:14,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:30:14,368 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-04 16:30:14,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:14,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545545564] [2020-09-04 16:30:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:14,371 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-04 16:30:15,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545545564] [2020-09-04 16:30:15,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:15,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 16:30:15,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389529821] [2020-09-04 16:30:15,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 16:30:15,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:15,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 16:30:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 16:30:15,054 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-04 16:30:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:15,502 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-04 16:30:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 16:30:15,503 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-04 16:30:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:15,505 INFO L225 Difference]: With dead ends: 59 [2020-09-04 16:30:15,505 INFO L226 Difference]: Without dead ends: 54 [2020-09-04 16:30:15,509 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 [2020-09-04 16:30:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-04 16:30:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-04 16:30:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 16:30:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-04 16:30:15,525 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-04 16:30:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:15,525 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-04 16:30:15,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 16:30:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-04 16:30:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 16:30:15,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:15,530 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] [2020-09-04 16:30:15,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:30:15,531 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-04 16:30:15,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:15,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970720266] [2020-09-04 16:30:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:15,536 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-04 16:30:16,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970720266] [2020-09-04 16:30:16,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:16,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:30:16,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790555670] [2020-09-04 16:30:16,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:30:16,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:16,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:30:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:30:16,330 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-04 16:30:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:16,936 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-04 16:30:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 16:30:16,936 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-04 16:30:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:16,938 INFO L225 Difference]: With dead ends: 63 [2020-09-04 16:30:16,938 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 16:30:16,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:30:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 16:30:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-04 16:30:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 16:30:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-04 16:30:16,966 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-04 16:30:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:16,967 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-04 16:30:16,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:30:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-04 16:30:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 16:30:16,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:16,973 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] [2020-09-04 16:30:16,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:30:16,974 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-04 16:30:16,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:16,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176090304] [2020-09-04 16:30:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:16,978 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-04 16:30:17,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176090304] [2020-09-04 16:30:17,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:17,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-04 16:30:17,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816633110] [2020-09-04 16:30:17,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 16:30:17,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 16:30:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:30:17,824 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-04 16:30:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:18,524 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-04 16:30:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 16:30:18,525 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-04 16:30:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:18,526 INFO L225 Difference]: With dead ends: 67 [2020-09-04 16:30:18,526 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 16:30:18,529 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 [2020-09-04 16:30:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 16:30:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 16:30:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 16:30:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-04 16:30:18,553 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-04 16:30:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:18,554 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-04 16:30:18,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 16:30:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-04 16:30:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-04 16:30:18,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:18,560 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] [2020-09-04 16:30:18,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:30:18,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-04 16:30:18,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:18,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615787596] [2020-09-04 16:30:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:18,568 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-04 16:30:19,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615787596] [2020-09-04 16:30:19,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:19,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-04 16:30:19,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123160962] [2020-09-04 16:30:19,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 16:30:19,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 16:30:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:30:19,667 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-04 16:30:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:20,375 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-04 16:30:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 16:30:20,376 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-04 16:30:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:20,378 INFO L225 Difference]: With dead ends: 71 [2020-09-04 16:30:20,378 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 16:30:20,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:30:20,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 16:30:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 16:30:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 16:30:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-04 16:30:20,388 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-04 16:30:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:20,388 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-04 16:30:20,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 16:30:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-04 16:30:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 16:30:20,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:20,390 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] [2020-09-04 16:30:20,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:30:20,391 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:20,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-04 16:30:20,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:20,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771908781] [2020-09-04 16:30:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:20,394 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-04 16:30:21,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771908781] [2020-09-04 16:30:21,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:21,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-09-04 16:30:21,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477256168] [2020-09-04 16:30:21,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 16:30:21,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 16:30:21,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 16:30:21,549 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-04 16:30:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:22,489 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-04 16:30:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 16:30:22,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-04 16:30:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:22,491 INFO L225 Difference]: With dead ends: 75 [2020-09-04 16:30:22,492 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 16:30:22,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 16:30:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 16:30:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 16:30:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 16:30:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-04 16:30:22,512 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-04 16:30:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:22,513 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-04 16:30:22,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 16:30:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-04 16:30:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-04 16:30:22,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:22,515 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] [2020-09-04 16:30:22,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:30:22,515 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-04 16:30:22,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:22,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300605266] [2020-09-04 16:30:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:22,524 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-04 16:30:23,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300605266] [2020-09-04 16:30:23,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:23,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-09-04 16:30:23,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542200303] [2020-09-04 16:30:23,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 16:30:23,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:23,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 16:30:23,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 16:30:23,947 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-04 16:30:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:24,956 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-04 16:30:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 16:30:24,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-04 16:30:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:24,959 INFO L225 Difference]: With dead ends: 79 [2020-09-04 16:30:24,959 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 16:30:24,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:30:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 16:30:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-04 16:30:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 16:30:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-04 16:30:24,975 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-04 16:30:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:24,978 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-04 16:30:24,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 16:30:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-04 16:30:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-04 16:30:24,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:24,981 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] [2020-09-04 16:30:24,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:30:24,981 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-04 16:30:24,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:24,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795011168] [2020-09-04 16:30:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:24,985 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-04 16:30:26,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795011168] [2020-09-04 16:30:26,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:26,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-09-04 16:30:26,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071724163] [2020-09-04 16:30:26,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 16:30:26,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 16:30:26,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:30:26,371 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 33 states. [2020-09-04 16:30:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:27,536 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-09-04 16:30:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 16:30:27,537 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-09-04 16:30:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:27,538 INFO L225 Difference]: With dead ends: 83 [2020-09-04 16:30:27,538 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 16:30:27,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 16:30:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 16:30:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-04 16:30:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 16:30:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-04 16:30:27,547 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 114 [2020-09-04 16:30:27,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:27,549 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-04 16:30:27,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 16:30:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-04 16:30:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-04 16:30:27,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:27,550 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] [2020-09-04 16:30:27,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:30:27,551 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash -751861855, now seen corresponding path program 15 times [2020-09-04 16:30:27,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:27,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802020873] [2020-09-04 16:30:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:27,556 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-09-04 16:30:29,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802020873] [2020-09-04 16:30:29,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:29,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-04 16:30:29,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250313377] [2020-09-04 16:30:29,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 16:30:29,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:29,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 16:30:29,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 16:30:29,131 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 35 states. [2020-09-04 16:30:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:30,453 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-04 16:30:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 16:30:30,454 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 121 [2020-09-04 16:30:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:30,455 INFO L225 Difference]: With dead ends: 87 [2020-09-04 16:30:30,455 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 16:30:30,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 16:30:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 16:30:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-04 16:30:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-04 16:30:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-09-04 16:30:30,463 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 121 [2020-09-04 16:30:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:30,464 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-09-04 16:30:30,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 16:30:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-09-04 16:30:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 16:30:30,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:30,466 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] [2020-09-04 16:30:30,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:30:30,466 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:30,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2017083634, now seen corresponding path program 16 times [2020-09-04 16:30:30,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:30,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472425588] [2020-09-04 16:30:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:30,469 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-09-04 16:30:32,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472425588] [2020-09-04 16:30:32,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:32,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-09-04 16:30:32,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525148911] [2020-09-04 16:30:32,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 16:30:32,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:32,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 16:30:32,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 16:30:32,300 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 37 states. [2020-09-04 16:30:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:33,881 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-04 16:30:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 16:30:33,882 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2020-09-04 16:30:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:33,884 INFO L225 Difference]: With dead ends: 91 [2020-09-04 16:30:33,884 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 16:30:33,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=139, Invalid=2723, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 16:30:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 16:30:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-04 16:30:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 16:30:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-09-04 16:30:33,894 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 128 [2020-09-04 16:30:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:33,895 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-09-04 16:30:33,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 16:30:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-09-04 16:30:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-04 16:30:33,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:33,897 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] [2020-09-04 16:30:33,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 16:30:33,897 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash -750736845, now seen corresponding path program 17 times [2020-09-04 16:30:33,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:33,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239636819] [2020-09-04 16:30:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:33,905 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-09-04 16:30:35,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239636819] [2020-09-04 16:30:35,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:35,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 16:30:35,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042139348] [2020-09-04 16:30:35,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 16:30:35,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 16:30:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:30:35,838 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 39 states. [2020-09-04 16:30:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:37,561 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-09-04 16:30:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 16:30:37,564 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 135 [2020-09-04 16:30:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:37,566 INFO L225 Difference]: With dead ends: 95 [2020-09-04 16:30:37,566 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 16:30:37,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 16:30:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 16:30:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-04 16:30:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 16:30:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-09-04 16:30:37,582 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-09-04 16:30:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:37,582 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-09-04 16:30:37,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 16:30:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-09-04 16:30:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 16:30:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:37,586 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] [2020-09-04 16:30:37,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 16:30:37,586 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash 112489604, now seen corresponding path program 18 times [2020-09-04 16:30:37,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:37,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452175211] [2020-09-04 16:30:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:37,592 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-09-04 16:30:39,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452175211] [2020-09-04 16:30:39,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:39,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-09-04 16:30:39,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115500159] [2020-09-04 16:30:39,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 16:30:39,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 16:30:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 16:30:39,650 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 41 states. [2020-09-04 16:30:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:41,561 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-04 16:30:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 16:30:41,562 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 142 [2020-09-04 16:30:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:41,564 INFO L225 Difference]: With dead ends: 99 [2020-09-04 16:30:41,564 INFO L226 Difference]: Without dead ends: 94 [2020-09-04 16:30:41,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 16:30:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-04 16:30:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-04 16:30:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 16:30:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-04 16:30:41,572 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 142 [2020-09-04 16:30:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:41,573 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-04 16:30:41,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 16:30:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-04 16:30:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 16:30:41,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:41,575 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] [2020-09-04 16:30:41,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 16:30:41,575 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:41,576 INFO L82 PathProgramCache]: Analyzing trace with hash 374596293, now seen corresponding path program 19 times [2020-09-04 16:30:41,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:41,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218290127] [2020-09-04 16:30:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:41,578 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-09-04 16:30:43,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218290127] [2020-09-04 16:30:43,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:43,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-09-04 16:30:43,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294203031] [2020-09-04 16:30:43,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 16:30:43,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:43,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 16:30:43,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 16:30:43,873 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 43 states. [2020-09-04 16:30:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:45,993 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-09-04 16:30:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 16:30:45,994 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 149 [2020-09-04 16:30:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:45,997 INFO L225 Difference]: With dead ends: 103 [2020-09-04 16:30:45,997 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 16:30:45,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=163, Invalid=3743, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 16:30:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 16:30:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-04 16:30:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 16:30:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-09-04 16:30:46,011 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 149 [2020-09-04 16:30:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:46,012 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-09-04 16:30:46,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 16:30:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-09-04 16:30:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 16:30:46,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:46,013 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] [2020-09-04 16:30:46,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 16:30:46,014 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1900661226, now seen corresponding path program 20 times [2020-09-04 16:30:46,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:46,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666742017] [2020-09-04 16:30:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:46,016 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-09-04 16:30:48,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666742017] [2020-09-04 16:30:48,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:48,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-09-04 16:30:48,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689179613] [2020-09-04 16:30:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 16:30:48,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:48,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 16:30:48,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:30:48,444 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 45 states. [2020-09-04 16:30:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:50,830 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-09-04 16:30:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 16:30:50,830 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 156 [2020-09-04 16:30:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:50,832 INFO L225 Difference]: With dead ends: 107 [2020-09-04 16:30:50,832 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 16:30:50,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=171, Invalid=4119, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 16:30:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 16:30:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-04 16:30:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 16:30:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-09-04 16:30:50,852 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 156 [2020-09-04 16:30:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:50,853 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-09-04 16:30:50,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 16:30:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-09-04 16:30:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 16:30:50,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:50,857 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] [2020-09-04 16:30:50,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 16:30:50,858 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1591006889, now seen corresponding path program 21 times [2020-09-04 16:30:50,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:50,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72971619] [2020-09-04 16:30:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:50,862 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-09-04 16:30:53,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72971619] [2020-09-04 16:30:53,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:53,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-09-04 16:30:53,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997897721] [2020-09-04 16:30:53,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 16:30:53,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 16:30:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 16:30:53,646 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 47 states. [2020-09-04 16:30:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:56,263 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-09-04 16:30:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 16:30:56,267 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 163 [2020-09-04 16:30:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:56,269 INFO L225 Difference]: With dead ends: 111 [2020-09-04 16:30:56,269 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 16:30:56,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 16:30:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 16:30:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-04 16:30:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 16:30:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-04 16:30:56,285 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 163 [2020-09-04 16:30:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:56,285 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-04 16:30:56,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 16:30:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-04 16:30:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 16:30:56,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:56,287 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] [2020-09-04 16:30:56,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 16:30:56,288 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2196904, now seen corresponding path program 22 times [2020-09-04 16:30:56,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:56,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008629174] [2020-09-04 16:30:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:56,291 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-09-04 16:30:59,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008629174] [2020-09-04 16:30:59,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:59,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-09-04 16:30:59,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246032249] [2020-09-04 16:30:59,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 16:30:59,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 16:30:59,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 16:30:59,547 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 49 states. [2020-09-04 16:31:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:02,323 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2020-09-04 16:31:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 16:31:02,324 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2020-09-04 16:31:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:02,326 INFO L225 Difference]: With dead ends: 115 [2020-09-04 16:31:02,326 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 16:31:02,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=187, Invalid=4925, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 16:31:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 16:31:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 16:31:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 16:31:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-09-04 16:31:02,336 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 170 [2020-09-04 16:31:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:02,337 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-09-04 16:31:02,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 16:31:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-09-04 16:31:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 16:31:02,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:02,338 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] [2020-09-04 16:31:02,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 16:31:02,339 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1568113175, now seen corresponding path program 23 times [2020-09-04 16:31:02,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:02,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580834890] [2020-09-04 16:31:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:02,341 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-09-04 16:31:05,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580834890] [2020-09-04 16:31:05,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:05,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-09-04 16:31:05,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485983355] [2020-09-04 16:31:05,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 16:31:05,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 16:31:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 16:31:05,421 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 51 states. [2020-09-04 16:31:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:08,409 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-09-04 16:31:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 16:31:08,409 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2020-09-04 16:31:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:08,411 INFO L225 Difference]: With dead ends: 119 [2020-09-04 16:31:08,411 INFO L226 Difference]: Without dead ends: 114 [2020-09-04 16:31:08,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=195, Invalid=5355, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 16:31:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-04 16:31:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-04 16:31:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-04 16:31:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-04 16:31:08,421 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 177 [2020-09-04 16:31:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:08,421 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-04 16:31:08,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 16:31:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-04 16:31:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 16:31:08,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:08,423 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] [2020-09-04 16:31:08,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 16:31:08,423 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1126669510, now seen corresponding path program 24 times [2020-09-04 16:31:08,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:08,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125816114] [2020-09-04 16:31:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:08,426 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-09-04 16:31:11,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125816114] [2020-09-04 16:31:11,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:11,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-09-04 16:31:11,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555864691] [2020-09-04 16:31:11,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 16:31:11,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:11,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 16:31:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 16:31:11,825 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 53 states. [2020-09-04 16:31:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:15,113 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2020-09-04 16:31:15,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 16:31:15,114 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 184 [2020-09-04 16:31:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:15,116 INFO L225 Difference]: With dead ends: 123 [2020-09-04 16:31:15,116 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 16:31:15,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=203, Invalid=5803, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 16:31:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 16:31:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-09-04 16:31:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 16:31:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-09-04 16:31:15,126 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 184 [2020-09-04 16:31:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:15,127 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-09-04 16:31:15,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 16:31:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-09-04 16:31:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 16:31:15,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:15,129 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] [2020-09-04 16:31:15,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 16:31:15,129 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1932386427, now seen corresponding path program 25 times [2020-09-04 16:31:15,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:15,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436369603] [2020-09-04 16:31:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:15,132 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-09-04 16:31:18,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436369603] [2020-09-04 16:31:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-09-04 16:31:18,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880953800] [2020-09-04 16:31:18,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 16:31:18,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 16:31:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 16:31:18,709 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 55 states. [2020-09-04 16:31:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:22,296 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-09-04 16:31:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 16:31:22,297 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 191 [2020-09-04 16:31:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:22,299 INFO L225 Difference]: With dead ends: 127 [2020-09-04 16:31:22,299 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 16:31:22,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 16:31:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 16:31:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-04 16:31:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 16:31:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-09-04 16:31:22,306 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 191 [2020-09-04 16:31:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:22,307 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-09-04 16:31:22,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 16:31:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-09-04 16:31:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 16:31:22,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:22,308 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] [2020-09-04 16:31:22,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 16:31:22,309 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1732456756, now seen corresponding path program 26 times [2020-09-04 16:31:22,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:22,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461523045] [2020-09-04 16:31:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:22,312 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-09-04 16:31:26,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461523045] [2020-09-04 16:31:26,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:26,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-09-04 16:31:26,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302942876] [2020-09-04 16:31:26,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 16:31:26,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:26,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 16:31:26,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 16:31:26,427 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-09-04 16:31:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:30,321 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-09-04 16:31:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 16:31:30,322 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 198 [2020-09-04 16:31:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:30,324 INFO L225 Difference]: With dead ends: 131 [2020-09-04 16:31:30,324 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 16:31:30,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=219, Invalid=6753, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 16:31:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 16:31:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-04 16:31:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 16:31:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-09-04 16:31:30,334 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 198 [2020-09-04 16:31:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:30,334 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-09-04 16:31:30,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 16:31:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-09-04 16:31:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 16:31:30,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:30,336 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] [2020-09-04 16:31:30,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 16:31:30,336 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:30,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1780657907, now seen corresponding path program 27 times [2020-09-04 16:31:30,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:30,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634863137] [2020-09-04 16:31:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:30,339 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-09-04 16:31:34,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634863137] [2020-09-04 16:31:34,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:34,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-09-04 16:31:34,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723520178] [2020-09-04 16:31:34,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 16:31:34,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 16:31:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 16:31:34,567 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 59 states. [2020-09-04 16:31:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:38,819 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-09-04 16:31:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 16:31:38,820 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 205 [2020-09-04 16:31:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:38,822 INFO L225 Difference]: With dead ends: 135 [2020-09-04 16:31:38,823 INFO L226 Difference]: Without dead ends: 130 [2020-09-04 16:31:38,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=227, Invalid=7255, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 16:31:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-04 16:31:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-04 16:31:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-04 16:31:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-09-04 16:31:38,835 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 205 [2020-09-04 16:31:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:38,836 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-09-04 16:31:38,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 16:31:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-09-04 16:31:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 16:31:38,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:38,838 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] [2020-09-04 16:31:38,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 16:31:38,839 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash -642725794, now seen corresponding path program 28 times [2020-09-04 16:31:38,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:38,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602308503] [2020-09-04 16:31:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:38,845 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:38,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:41,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-09-04 16:31:43,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602308503] [2020-09-04 16:31:43,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:43,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-09-04 16:31:43,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123222141] [2020-09-04 16:31:43,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 16:31:43,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 16:31:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 16:31:43,658 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 61 states. [2020-09-04 16:31:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:48,225 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-09-04 16:31:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 16:31:48,225 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 212 [2020-09-04 16:31:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:48,227 INFO L225 Difference]: With dead ends: 139 [2020-09-04 16:31:48,228 INFO L226 Difference]: Without dead ends: 134 [2020-09-04 16:31:48,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=235, Invalid=7775, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 16:31:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-04 16:31:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-04 16:31:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-04 16:31:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-04 16:31:48,238 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 212 [2020-09-04 16:31:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:48,238 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-04 16:31:48,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 16:31:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-04 16:31:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 16:31:48,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:48,240 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] [2020-09-04 16:31:48,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 16:31:48,241 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:48,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1218916449, now seen corresponding path program 29 times [2020-09-04 16:31:48,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:48,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456664416] [2020-09-04 16:31:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:48,243 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-09-04 16:31:53,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456664416] [2020-09-04 16:31:53,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:53,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-09-04 16:31:53,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588187416] [2020-09-04 16:31:53,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 16:31:53,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:53,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 16:31:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 16:31:53,179 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 63 states. [2020-09-04 16:31:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:58,054 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2020-09-04 16:31:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 16:31:58,055 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 219 [2020-09-04 16:31:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:58,058 INFO L225 Difference]: With dead ends: 143 [2020-09-04 16:31:58,058 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 16:31:58,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=243, Invalid=8313, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 16:31:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 16:31:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-04 16:31:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 16:31:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-09-04 16:31:58,071 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 219 [2020-09-04 16:31:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:58,072 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-09-04 16:31:58,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 16:31:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-09-04 16:31:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-04 16:31:58,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:58,074 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] [2020-09-04 16:31:58,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 16:31:58,076 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash 932597744, now seen corresponding path program 30 times [2020-09-04 16:31:58,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:58,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882729951] [2020-09-04 16:31:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:58,083 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-09-04 16:32:03,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882729951] [2020-09-04 16:32:03,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:03,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-09-04 16:32:03,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224465091] [2020-09-04 16:32:03,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 16:32:03,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:03,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 16:32:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 16:32:03,449 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 65 states. [2020-09-04 16:32:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:08,599 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-09-04 16:32:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 16:32:08,600 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 226 [2020-09-04 16:32:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:08,602 INFO L225 Difference]: With dead ends: 147 [2020-09-04 16:32:08,602 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 16:32:08,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=251, Invalid=8869, Unknown=0, NotChecked=0, Total=9120 [2020-09-04 16:32:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 16:32:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-09-04 16:32:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-04 16:32:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-09-04 16:32:08,613 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 226 [2020-09-04 16:32:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:08,613 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-09-04 16:32:08,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 16:32:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-09-04 16:32:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-04 16:32:08,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:08,615 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] [2020-09-04 16:32:08,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 16:32:08,616 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:08,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1369285583, now seen corresponding path program 31 times [2020-09-04 16:32:08,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:08,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849047752] [2020-09-04 16:32:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:08,618 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-09-04 16:32:14,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849047752] [2020-09-04 16:32:14,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:14,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-09-04 16:32:14,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652670139] [2020-09-04 16:32:14,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 16:32:14,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 16:32:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 16:32:14,467 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 67 states. [2020-09-04 16:32:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:20,134 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-09-04 16:32:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 16:32:20,135 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 233 [2020-09-04 16:32:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:20,137 INFO L225 Difference]: With dead ends: 151 [2020-09-04 16:32:20,137 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 16:32:20,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=259, Invalid=9443, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 16:32:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 16:32:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-04 16:32:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 16:32:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-09-04 16:32:20,148 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 233 [2020-09-04 16:32:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:20,149 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-09-04 16:32:20,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 16:32:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-09-04 16:32:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 16:32:20,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:20,150 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] [2020-09-04 16:32:20,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 16:32:20,151 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:20,151 INFO L82 PathProgramCache]: Analyzing trace with hash -598776446, now seen corresponding path program 32 times [2020-09-04 16:32:20,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:20,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835405227] [2020-09-04 16:32:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:20,153 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-09-04 16:32:26,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835405227] [2020-09-04 16:32:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:26,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-09-04 16:32:26,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220171760] [2020-09-04 16:32:26,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 16:32:26,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:26,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 16:32:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 16:32:26,260 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 69 states. [2020-09-04 16:32:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:32,317 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-09-04 16:32:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 16:32:32,318 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 240 [2020-09-04 16:32:32,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:32,321 INFO L225 Difference]: With dead ends: 155 [2020-09-04 16:32:32,321 INFO L226 Difference]: Without dead ends: 150 [2020-09-04 16:32:32,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=267, Invalid=10035, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 16:32:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-04 16:32:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-04 16:32:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-04 16:32:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-09-04 16:32:32,332 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 240 [2020-09-04 16:32:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:32,333 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-09-04 16:32:32,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 16:32:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-09-04 16:32:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-04 16:32:32,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:32,335 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] [2020-09-04 16:32:32,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 16:32:32,336 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2075915971, now seen corresponding path program 33 times [2020-09-04 16:32:32,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:32,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493173485] [2020-09-04 16:32:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:32,338 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-09-04 16:32:39,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493173485] [2020-09-04 16:32:39,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:39,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-09-04 16:32:39,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568859027] [2020-09-04 16:32:39,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 16:32:39,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:39,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 16:32:39,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 16:32:39,098 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 71 states. [2020-09-04 16:32:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:45,642 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2020-09-04 16:32:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 16:32:45,643 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 247 [2020-09-04 16:32:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:45,645 INFO L225 Difference]: With dead ends: 159 [2020-09-04 16:32:45,645 INFO L226 Difference]: Without dead ends: 154 [2020-09-04 16:32:45,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=275, Invalid=10645, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 16:32:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-04 16:32:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-04 16:32:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-04 16:32:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-04 16:32:45,659 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 247 [2020-09-04 16:32:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:45,659 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-04 16:32:45,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 16:32:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-04 16:32:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 16:32:45,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:45,662 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] [2020-09-04 16:32:45,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 16:32:45,662 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1673398548, now seen corresponding path program 34 times [2020-09-04 16:32:45,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:45,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017314074] [2020-09-04 16:32:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:45,672 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-09-04 16:32:53,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017314074] [2020-09-04 16:32:53,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:53,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-09-04 16:32:53,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100947774] [2020-09-04 16:32:53,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 16:32:53,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 16:32:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 16:32:53,181 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 73 states. [2020-09-04 16:33:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:00,236 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2020-09-04 16:33:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 16:33:00,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 254 [2020-09-04 16:33:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:00,240 INFO L225 Difference]: With dead ends: 163 [2020-09-04 16:33:00,240 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 16:33:00,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=283, Invalid=11273, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 16:33:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 16:33:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 16:33:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 16:33:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-09-04 16:33:00,253 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 254 [2020-09-04 16:33:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:00,253 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-09-04 16:33:00,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 16:33:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-09-04 16:33:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-04 16:33:00,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:00,256 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] [2020-09-04 16:33:00,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 16:33:00,256 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1244110677, now seen corresponding path program 35 times [2020-09-04 16:33:00,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:00,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558873952] [2020-09-04 16:33:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:00,258 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:04,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:04,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-09-04 16:33:08,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558873952] [2020-09-04 16:33:08,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:08,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-09-04 16:33:08,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555724021] [2020-09-04 16:33:08,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 16:33:08,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 16:33:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 16:33:08,195 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 75 states. [2020-09-04 16:33:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:15,705 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-09-04 16:33:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 16:33:15,706 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 261 [2020-09-04 16:33:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:15,708 INFO L225 Difference]: With dead ends: 167 [2020-09-04 16:33:15,709 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 16:33:15,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=291, Invalid=11919, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 16:33:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 16:33:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-04 16:33:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 16:33:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-09-04 16:33:15,721 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 261 [2020-09-04 16:33:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:15,722 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-09-04 16:33:15,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 16:33:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-09-04 16:33:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 16:33:15,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:15,724 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] [2020-09-04 16:33:15,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 16:33:15,724 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:15,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:15,724 INFO L82 PathProgramCache]: Analyzing trace with hash -607896922, now seen corresponding path program 36 times [2020-09-04 16:33:15,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:15,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738757693] [2020-09-04 16:33:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:15,726 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-09-04 16:33:24,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738757693] [2020-09-04 16:33:24,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:24,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-09-04 16:33:24,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165973004] [2020-09-04 16:33:24,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 16:33:24,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:24,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 16:33:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 16:33:24,301 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 77 states. [2020-09-04 16:33:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:32,261 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-04 16:33:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 16:33:32,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 268 [2020-09-04 16:33:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:32,264 INFO L225 Difference]: With dead ends: 171 [2020-09-04 16:33:32,264 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 16:33:32,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=299, Invalid=12583, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 16:33:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 16:33:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-04 16:33:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 16:33:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-09-04 16:33:32,276 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 268 [2020-09-04 16:33:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:32,277 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-09-04 16:33:32,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 16:33:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-09-04 16:33:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 16:33:32,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:32,279 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] [2020-09-04 16:33:32,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 16:33:32,279 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:32,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:32,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1852265959, now seen corresponding path program 37 times [2020-09-04 16:33:32,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:32,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560401035] [2020-09-04 16:33:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:32,282 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-09-04 16:33:41,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560401035] [2020-09-04 16:33:41,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:41,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2020-09-04 16:33:41,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042232275] [2020-09-04 16:33:41,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 16:33:41,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 16:33:41,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 16:33:41,181 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 79 states. [2020-09-04 16:33:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:49,830 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2020-09-04 16:33:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 16:33:49,832 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 275 [2020-09-04 16:33:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:49,833 INFO L225 Difference]: With dead ends: 175 [2020-09-04 16:33:49,833 INFO L226 Difference]: Without dead ends: 170 [2020-09-04 16:33:49,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=307, Invalid=13265, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 16:33:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-04 16:33:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-04 16:33:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-04 16:33:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-09-04 16:33:49,844 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 275 [2020-09-04 16:33:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:49,845 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-09-04 16:33:49,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 16:33:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-09-04 16:33:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-04 16:33:49,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:49,847 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] [2020-09-04 16:33:49,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 16:33:49,847 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1002177992, now seen corresponding path program 38 times [2020-09-04 16:33:49,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:49,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660961733] [2020-09-04 16:33:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:49,850 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-09-04 16:33:59,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660961733] [2020-09-04 16:33:59,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:59,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-09-04 16:33:59,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248926125] [2020-09-04 16:33:59,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 16:33:59,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:59,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 16:33:59,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 16:33:59,049 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 81 states. [2020-09-04 16:34:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:08,172 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-09-04 16:34:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 16:34:08,173 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 282 [2020-09-04 16:34:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:08,174 INFO L225 Difference]: With dead ends: 179 [2020-09-04 16:34:08,175 INFO L226 Difference]: Without dead ends: 174 [2020-09-04 16:34:08,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=315, Invalid=13965, Unknown=0, NotChecked=0, Total=14280 [2020-09-04 16:34:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-04 16:34:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-04 16:34:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-04 16:34:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-04 16:34:08,188 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 282 [2020-09-04 16:34:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:08,188 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-04 16:34:08,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 16:34:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-04 16:34:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-04 16:34:08,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:08,191 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] [2020-09-04 16:34:08,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 16:34:08,191 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1732057721, now seen corresponding path program 39 times [2020-09-04 16:34:08,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:08,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711903764] [2020-09-04 16:34:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:08,194 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:08,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:08,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:09,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:11,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:12,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:13,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-09-04 16:34:18,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711903764] [2020-09-04 16:34:18,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:18,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2020-09-04 16:34:18,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520371222] [2020-09-04 16:34:18,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 16:34:18,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:18,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 16:34:18,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 16:34:18,423 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 83 states. [2020-09-04 16:34:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:28,188 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2020-09-04 16:34:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 16:34:28,190 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 289 [2020-09-04 16:34:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:28,192 INFO L225 Difference]: With dead ends: 183 [2020-09-04 16:34:28,192 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 16:34:28,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=323, Invalid=14683, Unknown=0, NotChecked=0, Total=15006 [2020-09-04 16:34:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 16:34:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-04 16:34:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 16:34:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-09-04 16:34:28,203 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 289 [2020-09-04 16:34:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:28,203 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-09-04 16:34:28,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 16:34:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-09-04 16:34:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-04 16:34:28,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:28,206 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] [2020-09-04 16:34:28,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 16:34:28,206 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash 253708234, now seen corresponding path program 40 times [2020-09-04 16:34:28,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:28,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669300162] [2020-09-04 16:34:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:28,209 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:30,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:31,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-09-04 16:34:38,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669300162] [2020-09-04 16:34:38,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:38,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-09-04 16:34:38,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562448960] [2020-09-04 16:34:38,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 16:34:38,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:38,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 16:34:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 16:34:38,768 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 85 states. [2020-09-04 16:34:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:49,157 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2020-09-04 16:34:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 16:34:49,158 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 296 [2020-09-04 16:34:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:49,160 INFO L225 Difference]: With dead ends: 187 [2020-09-04 16:34:49,160 INFO L226 Difference]: Without dead ends: 182 [2020-09-04 16:34:49,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=331, Invalid=15419, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 16:34:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-04 16:34:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-04 16:34:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-04 16:34:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-09-04 16:34:49,171 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 296 [2020-09-04 16:34:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:49,171 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-09-04 16:34:49,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 16:34:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-09-04 16:34:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-04 16:34:49,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:49,174 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] [2020-09-04 16:34:49,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 16:34:49,174 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:49,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:49,175 INFO L82 PathProgramCache]: Analyzing trace with hash -580195061, now seen corresponding path program 41 times [2020-09-04 16:34:49,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:49,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819484137] [2020-09-04 16:34:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:49,177 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:55,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:56,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-09-04 16:35:00,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819484137] [2020-09-04 16:35:00,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:00,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2020-09-04 16:35:00,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608637591] [2020-09-04 16:35:00,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 16:35:00,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 16:35:00,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 16:35:00,492 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 87 states. [2020-09-04 16:35:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:11,774 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-09-04 16:35:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 16:35:11,775 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 303 [2020-09-04 16:35:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:11,777 INFO L225 Difference]: With dead ends: 191 [2020-09-04 16:35:11,777 INFO L226 Difference]: Without dead ends: 186 [2020-09-04 16:35:11,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=339, Invalid=16173, Unknown=0, NotChecked=0, Total=16512 [2020-09-04 16:35:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-04 16:35:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-04 16:35:11,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-04 16:35:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-09-04 16:35:11,788 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 303 [2020-09-04 16:35:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:11,789 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-09-04 16:35:11,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 16:35:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-09-04 16:35:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 16:35:11,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:11,791 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] [2020-09-04 16:35:11,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 16:35:11,792 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash 540549980, now seen corresponding path program 42 times [2020-09-04 16:35:11,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:11,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590041611] [2020-09-04 16:35:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:11,795 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:35:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-09-04 16:35:23,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590041611] [2020-09-04 16:35:23,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:23,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-09-04 16:35:23,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458985380] [2020-09-04 16:35:23,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 16:35:23,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:23,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 16:35:23,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 16:35:23,731 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 89 states. [2020-09-04 16:35:35,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:35,932 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2020-09-04 16:35:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 16:35:35,934 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 310 [2020-09-04 16:35:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:35,936 INFO L225 Difference]: With dead ends: 195 [2020-09-04 16:35:35,936 INFO L226 Difference]: Without dead ends: 190 [2020-09-04 16:35:35,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=347, Invalid=16945, Unknown=0, NotChecked=0, Total=17292 [2020-09-04 16:35:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-04 16:35:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-04 16:35:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-04 16:35:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-09-04 16:35:35,957 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 310 [2020-09-04 16:35:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:35,962 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-09-04 16:35:35,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 16:35:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-09-04 16:35:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 16:35:35,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:35,966 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] [2020-09-04 16:35:35,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 16:35:35,967 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:35,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1548563043, now seen corresponding path program 43 times [2020-09-04 16:35:35,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:35,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61134527] [2020-09-04 16:35:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:35,970 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:35:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:41,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:41,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-09-04 16:35:49,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61134527] [2020-09-04 16:35:49,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:49,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2020-09-04 16:35:49,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169457584] [2020-09-04 16:35:49,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 16:35:49,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:49,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 16:35:49,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 16:35:49,735 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 91 states. [2020-09-04 16:36:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:02,325 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2020-09-04 16:36:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 16:36:02,326 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 317 [2020-09-04 16:36:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:02,328 INFO L225 Difference]: With dead ends: 199 [2020-09-04 16:36:02,328 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 16:36:02,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=355, Invalid=17735, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 16:36:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 16:36:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-04 16:36:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 16:36:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-04 16:36:02,340 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 317 [2020-09-04 16:36:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:02,340 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-04 16:36:02,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 16:36:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-04 16:36:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 16:36:02,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:02,343 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] [2020-09-04 16:36:02,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 16:36:02,343 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:02,344 INFO L82 PathProgramCache]: Analyzing trace with hash -848261906, now seen corresponding path program 44 times [2020-09-04 16:36:02,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:02,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653788778] [2020-09-04 16:36:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:02,346 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:02,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-09-04 16:36:15,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653788778] [2020-09-04 16:36:15,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:15,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-09-04 16:36:15,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468949148] [2020-09-04 16:36:15,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 16:36:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 16:36:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 16:36:15,410 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 93 states. [2020-09-04 16:36:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:28,416 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2020-09-04 16:36:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 16:36:28,418 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 324 [2020-09-04 16:36:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:28,420 INFO L225 Difference]: With dead ends: 203 [2020-09-04 16:36:28,420 INFO L226 Difference]: Without dead ends: 198 [2020-09-04 16:36:28,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=363, Invalid=18543, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 16:36:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-04 16:36:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-04 16:36:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 16:36:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-09-04 16:36:28,430 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 324 [2020-09-04 16:36:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:28,431 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-09-04 16:36:28,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 16:36:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-09-04 16:36:28,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-04 16:36:28,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:28,433 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] [2020-09-04 16:36:28,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 16:36:28,434 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1227441105, now seen corresponding path program 45 times [2020-09-04 16:36:28,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:28,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771647459] [2020-09-04 16:36:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:28,436 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:30,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-09-04 16:36:42,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771647459] [2020-09-04 16:36:42,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:42,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2020-09-04 16:36:42,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715574161] [2020-09-04 16:36:42,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 16:36:42,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 16:36:42,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 16:36:42,578 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 95 states. [2020-09-04 16:36:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:57,333 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2020-09-04 16:36:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 16:36:57,334 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 331 [2020-09-04 16:36:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:57,337 INFO L225 Difference]: With dead ends: 207 [2020-09-04 16:36:57,337 INFO L226 Difference]: Without dead ends: 202 [2020-09-04 16:36:57,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=371, Invalid=19369, Unknown=0, NotChecked=0, Total=19740 [2020-09-04 16:36:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-04 16:36:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-04 16:36:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-04 16:36:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-09-04 16:36:57,350 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 331 [2020-09-04 16:36:57,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:57,351 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-09-04 16:36:57,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 16:36:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-09-04 16:36:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-04 16:36:57,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:57,354 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] [2020-09-04 16:36:57,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 16:36:57,354 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1588233344, now seen corresponding path program 46 times [2020-09-04 16:36:57,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:57,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975285765] [2020-09-04 16:36:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:57,357 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:57,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:11,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-09-04 16:37:13,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975285765] [2020-09-04 16:37:13,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:37:13,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-09-04 16:37:13,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609111747] [2020-09-04 16:37:13,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 16:37:13,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:37:13,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 16:37:13,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 16:37:13,065 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 97 states. [2020-09-04 16:37:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:37:28,815 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2020-09-04 16:37:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 16:37:28,817 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 338 [2020-09-04 16:37:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:37:28,819 INFO L225 Difference]: With dead ends: 211 [2020-09-04 16:37:28,820 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 16:37:28,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=379, Invalid=20213, Unknown=0, NotChecked=0, Total=20592 [2020-09-04 16:37:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 16:37:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-04 16:37:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-04 16:37:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-09-04 16:37:28,831 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 338 [2020-09-04 16:37:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:37:28,832 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-09-04 16:37:28,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 16:37:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-09-04 16:37:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 16:37:28,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:37:28,835 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] [2020-09-04 16:37:28,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 16:37:28,835 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:37:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:37:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1033418945, now seen corresponding path program 47 times [2020-09-04 16:37:28,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:37:28,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963131916] [2020-09-04 16:37:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:37:28,838 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:37:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:37:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:37:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:29,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:43,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2020-09-04 16:37:45,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963131916] [2020-09-04 16:37:45,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:37:45,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2020-09-04 16:37:45,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75687008] [2020-09-04 16:37:45,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 16:37:45,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:37:45,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 16:37:45,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 16:37:45,427 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 99 states. [2020-09-04 16:38:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:02,313 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-09-04 16:38:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 16:38:02,315 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 345 [2020-09-04 16:38:02,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:02,317 INFO L225 Difference]: With dead ends: 215 [2020-09-04 16:38:02,317 INFO L226 Difference]: Without dead ends: 210 [2020-09-04 16:38:02,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=387, Invalid=21075, Unknown=0, NotChecked=0, Total=21462 [2020-09-04 16:38:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-04 16:38:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-09-04 16:38:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-04 16:38:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-09-04 16:38:02,328 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 345 [2020-09-04 16:38:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:02,328 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-09-04 16:38:02,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 16:38:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-09-04 16:38:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-04 16:38:02,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:02,331 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] [2020-09-04 16:38:02,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 16:38:02,331 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1916270062, now seen corresponding path program 48 times [2020-09-04 16:38:02,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:02,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643263281] [2020-09-04 16:38:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:02,334 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:38:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-09-04 16:38:19,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643263281] [2020-09-04 16:38:19,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:19,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-09-04 16:38:19,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890553559] [2020-09-04 16:38:19,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 16:38:19,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:19,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 16:38:19,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 16:38:19,747 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 101 states. [2020-09-04 16:38:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:37,994 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-09-04 16:38:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 16:38:37,996 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 352 [2020-09-04 16:38:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:37,998 INFO L225 Difference]: With dead ends: 219 [2020-09-04 16:38:37,998 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 16:38:38,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=395, Invalid=21955, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 16:38:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 16:38:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-04 16:38:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-04 16:38:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-04 16:38:38,011 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 352 [2020-09-04 16:38:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:38,011 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-04 16:38:38,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 16:38:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-04 16:38:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-04 16:38:38,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:38,014 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] [2020-09-04 16:38:38,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 16:38:38,015 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:38,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:38,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2001026221, now seen corresponding path program 49 times [2020-09-04 16:38:38,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:38,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914094262] [2020-09-04 16:38:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:38,017 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:38:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-09-04 16:38:55,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914094262] [2020-09-04 16:38:55,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:55,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2020-09-04 16:38:55,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413048283] [2020-09-04 16:38:55,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 16:38:55,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 16:38:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 16:38:55,931 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 103 states. [2020-09-04 16:39:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:15,505 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2020-09-04 16:39:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 16:39:15,507 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 359 [2020-09-04 16:39:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:15,509 INFO L225 Difference]: With dead ends: 223 [2020-09-04 16:39:15,509 INFO L226 Difference]: Without dead ends: 218 [2020-09-04 16:39:15,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=403, Invalid=22853, Unknown=0, NotChecked=0, Total=23256 [2020-09-04 16:39:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-04 16:39:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-04 16:39:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-04 16:39:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-09-04 16:39:15,525 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 359 [2020-09-04 16:39:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:15,525 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-09-04 16:39:15,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 16:39:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-09-04 16:39:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-09-04 16:39:15,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:15,529 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] [2020-09-04 16:39:15,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 16:39:15,529 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2035606108, now seen corresponding path program 50 times [2020-09-04 16:39:15,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:15,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578190404] [2020-09-04 16:39:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:15,533 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:39:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:16,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2020-09-04 16:39:35,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578190404] [2020-09-04 16:39:35,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:35,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-09-04 16:39:35,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104296701] [2020-09-04 16:39:35,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 16:39:35,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 16:39:35,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 16:39:35,881 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 105 states. [2020-09-04 16:39:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:57,737 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-09-04 16:39:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 16:39:57,739 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 366 [2020-09-04 16:39:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:57,742 INFO L225 Difference]: With dead ends: 227 [2020-09-04 16:39:57,742 INFO L226 Difference]: Without dead ends: 222 [2020-09-04 16:39:57,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=411, Invalid=23769, Unknown=0, NotChecked=0, Total=24180 [2020-09-04 16:39:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-04 16:39:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-04 16:39:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-04 16:39:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-09-04 16:39:57,753 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 366 [2020-09-04 16:39:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:57,754 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-09-04 16:39:57,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 16:39:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-09-04 16:39:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-04 16:39:57,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:57,757 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] [2020-09-04 16:39:57,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 16:39:57,757 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash 318692325, now seen corresponding path program 51 times [2020-09-04 16:39:57,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:57,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107511327] [2020-09-04 16:39:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:57,760 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:39:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-09-04 16:40:19,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107511327] [2020-09-04 16:40:19,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:19,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2020-09-04 16:40:19,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731067195] [2020-09-04 16:40:19,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 16:40:19,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:19,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 16:40:19,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 16:40:19,090 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 107 states. [2020-09-04 16:40:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:41,193 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2020-09-04 16:40:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 16:40:41,195 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2020-09-04 16:40:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:41,198 INFO L225 Difference]: With dead ends: 231 [2020-09-04 16:40:41,198 INFO L226 Difference]: Without dead ends: 226 [2020-09-04 16:40:41,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=419, Invalid=24703, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 16:40:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-04 16:40:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-04 16:40:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-04 16:40:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-09-04 16:40:41,211 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 373 [2020-09-04 16:40:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:41,211 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-09-04 16:40:41,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 16:40:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-09-04 16:40:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 16:40:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:41,214 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] [2020-09-04 16:40:41,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 16:40:41,214 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:41,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash -415908042, now seen corresponding path program 52 times [2020-09-04 16:40:41,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:41,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533263353] [2020-09-04 16:40:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:41,217 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:40:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:55,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4082 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4082 trivial. 0 not checked. [2020-09-04 16:41:03,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533263353] [2020-09-04 16:41:03,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:03,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2020-09-04 16:41:03,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971473081] [2020-09-04 16:41:03,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 16:41:03,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 16:41:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 16:41:03,753 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 109 states. [2020-09-04 16:41:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:28,143 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2020-09-04 16:41:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 16:41:28,146 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 380 [2020-09-04 16:41:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:28,148 INFO L225 Difference]: With dead ends: 235 [2020-09-04 16:41:28,148 INFO L226 Difference]: Without dead ends: 230 [2020-09-04 16:41:28,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=427, Invalid=25655, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 16:41:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-04 16:41:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-04 16:41:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 16:41:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-09-04 16:41:28,157 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 380 [2020-09-04 16:41:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:28,157 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-09-04 16:41:28,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 16:41:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-09-04 16:41:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-09-04 16:41:28,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:28,160 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] [2020-09-04 16:41:28,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 16:41:28,160 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2128149897, now seen corresponding path program 53 times [2020-09-04 16:41:28,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:28,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483424673] [2020-09-04 16:41:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:28,163 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:41:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:32,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:47,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2020-09-04 16:41:52,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483424673] [2020-09-04 16:41:52,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:52,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2020-09-04 16:41:52,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184799526] [2020-09-04 16:41:52,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 16:41:52,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 16:41:52,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 16:41:52,595 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 111 states. [2020-09-04 16:42:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:18,653 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2020-09-04 16:42:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 16:42:18,656 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 387 [2020-09-04 16:42:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:18,657 INFO L225 Difference]: With dead ends: 239 [2020-09-04 16:42:18,657 INFO L226 Difference]: Without dead ends: 234 [2020-09-04 16:42:18,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=435, Invalid=26625, Unknown=0, NotChecked=0, Total=27060 [2020-09-04 16:42:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-04 16:42:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-04 16:42:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-04 16:42:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-04 16:42:18,668 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 387 [2020-09-04 16:42:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:18,669 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-04 16:42:18,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 16:42:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-04 16:42:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-04 16:42:18,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:18,671 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] [2020-09-04 16:42:18,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 16:42:18,672 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1085673784, now seen corresponding path program 54 times [2020-09-04 16:42:18,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:18,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892757331] [2020-09-04 16:42:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:18,674 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:18,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:42:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:19,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:20,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:22,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:29,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:38,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat