/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:55,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:55,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:55,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:55,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:55,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:56,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:56,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:56,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:56,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:56,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:56,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:56,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:56,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:56,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:56,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:56,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:56,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:56,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:56,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:56,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:56,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:56,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:56,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:56,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:37:56,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:37:56,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:37:56,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:37:56,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:37:56,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:37:56,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:37:56,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:37:56,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:37:56,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:56,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:56,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:56,061 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 21:37:56,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:56,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:56,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:56,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:56,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:56,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:56,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:56,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:56,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:56,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:56,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:56,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:56,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:56,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:56,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:56,089 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:56,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:56,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:56,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:56,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:56,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:56,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:56,091 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 21:37:56,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:56,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:56,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:56,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:56,569 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:56,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-04 21:37:56,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/273e2a657/38dc219e28264863bdf8f3368e0f609b/FLAG6ae75c1ae [2020-09-04 21:37:57,195 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:57,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-04 21:37:57,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/273e2a657/38dc219e28264863bdf8f3368e0f609b/FLAG6ae75c1ae [2020-09-04 21:37:57,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/273e2a657/38dc219e28264863bdf8f3368e0f609b [2020-09-04 21:37:57,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:57,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:57,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:57,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:57,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:57,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5fd418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57, skipping insertion in model container [2020-09-04 21:37:57,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:57,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:57,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:57,827 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:57,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:57,863 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:57,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57 WrapperNode [2020-09-04 21:37:57,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:57,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:57,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:57,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:57,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:57,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:57,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:57,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:57,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (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 21:37:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-04 21:37:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-04 21:37:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:58,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:58,298 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 21:37:58,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:58 BoogieIcfgContainer [2020-09-04 21:37:58,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:58,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:58,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:58,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:58,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:57" (1/3) ... [2020-09-04 21:37:58,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb5dd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:58, skipping insertion in model container [2020-09-04 21:37:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57" (2/3) ... [2020-09-04 21:37:58,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb5dd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:58, skipping insertion in model container [2020-09-04 21:37:58,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:58" (3/3) ... [2020-09-04 21:37:58,314 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-04 21:37:58,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:58,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:58,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:58,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:58,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:58,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:58,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:58,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:58,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:58,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:58,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 21:37:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 21:37:58,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:58,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:58,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-04 21:37:58,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:58,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848348278] [2020-09-04 21:37:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:58,930 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 17 [2020-09-04 21:37:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:37:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,010 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 21:37:59,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848348278] [2020-09-04 21:37:59,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:59,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 21:37:59,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491342771] [2020-09-04 21:37:59,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 21:37:59,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:59,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 21:37:59,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:37:59,042 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 9 states. [2020-09-04 21:37:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:59,279 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-09-04 21:37:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 21:37:59,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-04 21:37:59,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:59,295 INFO L225 Difference]: With dead ends: 62 [2020-09-04 21:37:59,295 INFO L226 Difference]: Without dead ends: 40 [2020-09-04 21:37:59,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:37:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-04 21:37:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-04 21:37:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 21:37:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-04 21:37:59,363 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-04 21:37:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:59,364 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-04 21:37:59,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 21:37:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-04 21:37:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 21:37:59,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:59,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:59,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:59,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-04 21:37:59,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:59,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881451934] [2020-09-04 21:37:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:37:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,720 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 21:37:59,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881451934] [2020-09-04 21:37:59,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:59,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 21:37:59,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325877228] [2020-09-04 21:37:59,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 21:37:59,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 21:37:59,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:37:59,725 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-09-04 21:37:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:59,886 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-04 21:37:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 21:37:59,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-04 21:37:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:59,889 INFO L225 Difference]: With dead ends: 49 [2020-09-04 21:37:59,889 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 21:37:59,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-04 21:37:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 21:37:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-04 21:37:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 21:37:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-04 21:37:59,902 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-04 21:37:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:59,902 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-04 21:37:59,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 21:37:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-04 21:37:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 21:37:59,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:59,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:59,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:37:59,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-04 21:37:59,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:59,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934024148] [2020-09-04 21:37:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:37:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:37:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:59,998 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 21:37:59,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934024148] [2020-09-04 21:37:59,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:59,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:37:59,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017876558] [2020-09-04 21:38:00,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:38:00,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:00,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:38:00,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:38:00,003 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-09-04 21:38:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:00,053 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-09-04 21:38:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 21:38:00,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-04 21:38:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:00,055 INFO L225 Difference]: With dead ends: 61 [2020-09-04 21:38:00,055 INFO L226 Difference]: Without dead ends: 41 [2020-09-04 21:38:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:38:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-04 21:38:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-04 21:38:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 21:38:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-09-04 21:38:00,067 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-09-04 21:38:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:00,067 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-09-04 21:38:00,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:38:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-09-04 21:38:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 21:38:00,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:00,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:00,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:38:00,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-04 21:38:00,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:00,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136106933] [2020-09-04 21:38:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,287 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-09-04 21:38:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,456 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 21:38:00,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136106933] [2020-09-04 21:38:00,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:38:00,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 21:38:00,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742977373] [2020-09-04 21:38:00,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 21:38:00,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 21:38:00,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:38:00,459 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-09-04 21:38:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:00,871 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-09-04 21:38:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 21:38:00,872 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-09-04 21:38:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:00,874 INFO L225 Difference]: With dead ends: 53 [2020-09-04 21:38:00,875 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 21:38:00,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-04 21:38:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 21:38:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-04 21:38:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 21:38:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-09-04 21:38:00,903 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-09-04 21:38:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:00,903 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-09-04 21:38:00,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 21:38:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-09-04 21:38:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 21:38:00,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:00,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:00,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:38:00,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-04 21:38:00,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:00,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938817107] [2020-09-04 21:38:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 21:38:00,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938817107] [2020-09-04 21:38:00,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:38:00,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:38:00,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590890665] [2020-09-04 21:38:00,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:38:00,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:00,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:38:00,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:38:00,998 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-09-04 21:38:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:01,039 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-09-04 21:38:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 21:38:01,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-04 21:38:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:01,041 INFO L225 Difference]: With dead ends: 63 [2020-09-04 21:38:01,041 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 21:38:01,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:38:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 21:38:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-04 21:38:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 21:38:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-04 21:38:01,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2020-09-04 21:38:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:01,051 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-04 21:38:01,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:38:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-04 21:38:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 21:38:01,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:01,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:01,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 21:38:01,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:01,054 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-04 21:38:01,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:01,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062679366] [2020-09-04 21:38:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 21:38:01,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062679366] [2020-09-04 21:38:01,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:01,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-04 21:38:01,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548938518] [2020-09-04 21:38:01,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 21:38:01,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 21:38:01,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:38:01,508 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 14 states. [2020-09-04 21:38:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:01,888 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-09-04 21:38:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 21:38:01,888 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-09-04 21:38:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:01,890 INFO L225 Difference]: With dead ends: 62 [2020-09-04 21:38:01,890 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 21:38:01,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-09-04 21:38:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 21:38:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-04 21:38:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 21:38:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-04 21:38:01,915 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 39 [2020-09-04 21:38:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:01,916 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-04 21:38:01,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 21:38:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-04 21:38:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 21:38:01,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:01,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:01,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 21:38:01,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:01,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-04 21:38:01,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:01,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234988612] [2020-09-04 21:38:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,170 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 19 [2020-09-04 21:38:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 21:38:02,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234988612] [2020-09-04 21:38:02,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:02,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-04 21:38:02,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636974669] [2020-09-04 21:38:02,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 21:38:02,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:02,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 21:38:02,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-04 21:38:02,402 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 16 states. [2020-09-04 21:38:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:02,987 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-09-04 21:38:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 21:38:02,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-09-04 21:38:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:02,989 INFO L225 Difference]: With dead ends: 72 [2020-09-04 21:38:02,989 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 21:38:02,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2020-09-04 21:38:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 21:38:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-09-04 21:38:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 21:38:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-04 21:38:03,001 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2020-09-04 21:38:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:03,001 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-04 21:38:03,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 21:38:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-04 21:38:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 21:38:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:03,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:03,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 21:38:03,004 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-04 21:38:03,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:03,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069826267] [2020-09-04 21:38:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,242 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2020-09-04 21:38:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 21:38:03,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069826267] [2020-09-04 21:38:03,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:03,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-04 21:38:03,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062768279] [2020-09-04 21:38:03,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 21:38:03,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 21:38:03,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-09-04 21:38:03,573 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 18 states. [2020-09-04 21:38:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:04,221 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-09-04 21:38:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 21:38:04,226 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-09-04 21:38:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:04,228 INFO L225 Difference]: With dead ends: 82 [2020-09-04 21:38:04,228 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 21:38:04,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 21:38:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 21:38:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2020-09-04 21:38:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 21:38:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-09-04 21:38:04,253 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 57 [2020-09-04 21:38:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:04,253 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-09-04 21:38:04,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 21:38:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-09-04 21:38:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-04 21:38:04,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:04,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:04,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 21:38:04,256 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-04 21:38:04,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:04,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028165396] [2020-09-04 21:38:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,430 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-09-04 21:38:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-04 21:38:04,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028165396] [2020-09-04 21:38:04,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:04,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 21:38:04,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897999132] [2020-09-04 21:38:04,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 21:38:04,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 21:38:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-04 21:38:04,840 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 19 states. [2020-09-04 21:38:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:05,720 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-09-04 21:38:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 21:38:05,721 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-04 21:38:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:05,722 INFO L225 Difference]: With dead ends: 92 [2020-09-04 21:38:05,722 INFO L226 Difference]: Without dead ends: 85 [2020-09-04 21:38:05,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 21:38:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-04 21:38:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-09-04 21:38:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-04 21:38:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-09-04 21:38:05,737 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 66 [2020-09-04 21:38:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:05,738 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-09-04 21:38:05,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 21:38:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-09-04 21:38:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-04 21:38:05,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:05,739 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:05,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 21:38:05,739 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-04 21:38:05,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:05,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149703794] [2020-09-04 21:38:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-04 21:38:06,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149703794] [2020-09-04 21:38:06,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:06,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-04 21:38:06,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124713641] [2020-09-04 21:38:06,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 21:38:06,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:06,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 21:38:06,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-09-04 21:38:06,517 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 22 states. [2020-09-04 21:38:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:07,495 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-04 21:38:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 21:38:07,495 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-04 21:38:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:07,497 INFO L225 Difference]: With dead ends: 102 [2020-09-04 21:38:07,497 INFO L226 Difference]: Without dead ends: 95 [2020-09-04 21:38:07,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=1738, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 21:38:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-04 21:38:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68. [2020-09-04 21:38:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 21:38:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-09-04 21:38:07,512 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 75 [2020-09-04 21:38:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:07,512 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-09-04 21:38:07,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 21:38:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-09-04 21:38:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-04 21:38:07,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:07,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:07,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 21:38:07,514 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-04 21:38:07,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:07,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936528363] [2020-09-04 21:38:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:07,715 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-09-04 21:38:07,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:08,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-04 21:38:08,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936528363] [2020-09-04 21:38:08,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:08,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 21:38:08,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593919431] [2020-09-04 21:38:08,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 21:38:08,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:08,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 21:38:08,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-04 21:38:08,308 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 23 states. [2020-09-04 21:38:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:09,662 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-09-04 21:38:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 21:38:09,662 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-09-04 21:38:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:09,663 INFO L225 Difference]: With dead ends: 112 [2020-09-04 21:38:09,664 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 21:38:09,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 21:38:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 21:38:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2020-09-04 21:38:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 21:38:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-09-04 21:38:09,678 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 84 [2020-09-04 21:38:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:09,679 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-09-04 21:38:09,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 21:38:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-09-04 21:38:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-04 21:38:09,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:09,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:09,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 21:38:09,681 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:09,681 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-04 21:38:09,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:09,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45403418] [2020-09-04 21:38:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 21:38:10,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45403418] [2020-09-04 21:38:10,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:10,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-04 21:38:10,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739547225] [2020-09-04 21:38:10,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 21:38:10,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 21:38:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-09-04 21:38:10,647 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 26 states. [2020-09-04 21:38:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:12,148 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-09-04 21:38:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 21:38:12,153 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 93 [2020-09-04 21:38:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:12,154 INFO L225 Difference]: With dead ends: 122 [2020-09-04 21:38:12,155 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 21:38:12,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 21:38:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 21:38:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2020-09-04 21:38:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 21:38:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-09-04 21:38:12,172 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 93 [2020-09-04 21:38:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:12,172 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-09-04 21:38:12,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 21:38:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-09-04 21:38:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-04 21:38:12,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:12,174 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:12,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 21:38:12,175 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1934265180, now seen corresponding path program 4 times [2020-09-04 21:38:12,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:12,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948913309] [2020-09-04 21:38:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,386 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:38:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-04 21:38:13,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948913309] [2020-09-04 21:38:13,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:13,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-04 21:38:13,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603972975] [2020-09-04 21:38:13,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-04 21:38:13,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:13,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-04 21:38:13,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-09-04 21:38:13,255 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 28 states. [2020-09-04 21:38:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:15,050 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-09-04 21:38:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 21:38:15,051 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-09-04 21:38:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:15,052 INFO L225 Difference]: With dead ends: 132 [2020-09-04 21:38:15,052 INFO L226 Difference]: Without dead ends: 125 [2020-09-04 21:38:15,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=3211, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 21:38:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-04 21:38:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-09-04 21:38:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 21:38:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-04 21:38:15,069 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 102 [2020-09-04 21:38:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:15,070 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-04 21:38:15,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-04 21:38:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-04 21:38:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-04 21:38:15,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:15,071 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:15,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 21:38:15,072 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:15,072 INFO L82 PathProgramCache]: Analyzing trace with hash -390895683, now seen corresponding path program 5 times [2020-09-04 21:38:15,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:15,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209059026] [2020-09-04 21:38:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-04 21:38:16,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209059026] [2020-09-04 21:38:16,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:16,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-04 21:38:16,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313985907] [2020-09-04 21:38:16,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-04 21:38:16,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-04 21:38:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-09-04 21:38:16,207 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 30 states. [2020-09-04 21:38:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:18,346 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-09-04 21:38:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 21:38:18,347 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 111 [2020-09-04 21:38:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:18,348 INFO L225 Difference]: With dead ends: 142 [2020-09-04 21:38:18,348 INFO L226 Difference]: Without dead ends: 135 [2020-09-04 21:38:18,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=3802, Unknown=0, NotChecked=0, Total=4032 [2020-09-04 21:38:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-04 21:38:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 88. [2020-09-04 21:38:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 21:38:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-04 21:38:18,369 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 111 [2020-09-04 21:38:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:18,369 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-04 21:38:18,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-04 21:38:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-04 21:38:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-04 21:38:18,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:18,371 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 21:38:18,371 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2094114280, now seen corresponding path program 5 times [2020-09-04 21:38:18,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:18,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072997269] [2020-09-04 21:38:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-09-04 21:38:19,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072997269] [2020-09-04 21:38:19,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:19,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 21:38:19,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791726519] [2020-09-04 21:38:19,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 21:38:19,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:19,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 21:38:19,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-09-04 21:38:19,715 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 31 states. [2020-09-04 21:38:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:22,255 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-09-04 21:38:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-04 21:38:22,255 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 120 [2020-09-04 21:38:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:22,257 INFO L225 Difference]: With dead ends: 152 [2020-09-04 21:38:22,257 INFO L226 Difference]: Without dead ends: 145 [2020-09-04 21:38:22,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=243, Invalid=4313, Unknown=0, NotChecked=0, Total=4556 [2020-09-04 21:38:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-04 21:38:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-09-04 21:38:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-04 21:38:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-09-04 21:38:22,277 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 120 [2020-09-04 21:38:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:22,277 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-09-04 21:38:22,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 21:38:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-09-04 21:38:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-04 21:38:22,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:22,278 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:22,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 21:38:22,279 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash -501508427, now seen corresponding path program 6 times [2020-09-04 21:38:22,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:22,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995272700] [2020-09-04 21:38:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:22,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-09-04 21:38:23,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995272700] [2020-09-04 21:38:23,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:23,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-04 21:38:23,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206506359] [2020-09-04 21:38:23,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-04 21:38:23,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:23,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-04 21:38:23,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1054, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 21:38:23,808 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 34 states. [2020-09-04 21:38:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:26,511 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-09-04 21:38:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 21:38:26,512 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 129 [2020-09-04 21:38:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:26,513 INFO L225 Difference]: With dead ends: 162 [2020-09-04 21:38:26,513 INFO L226 Difference]: Without dead ends: 155 [2020-09-04 21:38:26,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=268, Invalid=5134, Unknown=0, NotChecked=0, Total=5402 [2020-09-04 21:38:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-04 21:38:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-09-04 21:38:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 21:38:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-09-04 21:38:26,546 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 129 [2020-09-04 21:38:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:26,547 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-09-04 21:38:26,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-04 21:38:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-09-04 21:38:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-04 21:38:26,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:26,548 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:26,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 21:38:26,549 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash -436935508, now seen corresponding path program 6 times [2020-09-04 21:38:26,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:26,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105761189] [2020-09-04 21:38:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:26,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-09-04 21:38:28,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105761189] [2020-09-04 21:38:28,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:28,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-04 21:38:28,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840742679] [2020-09-04 21:38:28,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 21:38:28,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:28,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 21:38:28,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1188, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 21:38:28,240 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 36 states. [2020-09-04 21:38:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:31,313 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-09-04 21:38:31,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-04 21:38:31,313 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2020-09-04 21:38:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:31,315 INFO L225 Difference]: With dead ends: 172 [2020-09-04 21:38:31,315 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 21:38:31,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=287, Invalid=5875, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 21:38:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 21:38:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 103. [2020-09-04 21:38:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-04 21:38:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-09-04 21:38:31,348 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 138 [2020-09-04 21:38:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:31,348 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-09-04 21:38:31,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 21:38:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-09-04 21:38:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-04 21:38:31,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:31,350 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:31,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 21:38:31,350 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1952223955, now seen corresponding path program 7 times [2020-09-04 21:38:31,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:31,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912517503] [2020-09-04 21:38:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,588 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:38:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-09-04 21:38:33,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912517503] [2020-09-04 21:38:33,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:33,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-04 21:38:33,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33353167] [2020-09-04 21:38:33,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-04 21:38:33,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-04 21:38:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1330, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 21:38:33,092 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 38 states. [2020-09-04 21:38:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:36,534 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-09-04 21:38:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-04 21:38:36,535 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 147 [2020-09-04 21:38:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:36,536 INFO L225 Difference]: With dead ends: 182 [2020-09-04 21:38:36,537 INFO L226 Difference]: Without dead ends: 175 [2020-09-04 21:38:36,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=6666, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 21:38:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-04 21:38:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 108. [2020-09-04 21:38:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-04 21:38:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-09-04 21:38:36,563 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 147 [2020-09-04 21:38:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:36,564 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-09-04 21:38:36,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-04 21:38:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-09-04 21:38:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 21:38:36,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:36,565 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:36,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 21:38:36,565 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:36,566 INFO L82 PathProgramCache]: Analyzing trace with hash -265506576, now seen corresponding path program 7 times [2020-09-04 21:38:36,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:36,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816464827] [2020-09-04 21:38:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-09-04 21:38:38,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816464827] [2020-09-04 21:38:38,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:38,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 21:38:38,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826551359] [2020-09-04 21:38:38,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 21:38:38,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:38,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 21:38:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 21:38:38,514 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 39 states. [2020-09-04 21:38:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:42,516 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-09-04 21:38:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-04 21:38:42,516 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 156 [2020-09-04 21:38:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:42,518 INFO L225 Difference]: With dead ends: 192 [2020-09-04 21:38:42,518 INFO L226 Difference]: Without dead ends: 185 [2020-09-04 21:38:42,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=319, Invalid=7337, Unknown=0, NotChecked=0, Total=7656 [2020-09-04 21:38:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-04 21:38:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2020-09-04 21:38:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-04 21:38:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-09-04 21:38:42,551 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 156 [2020-09-04 21:38:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:42,552 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-09-04 21:38:42,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 21:38:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-09-04 21:38:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-04 21:38:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:42,553 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:42,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 21:38:42,554 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1317743397, now seen corresponding path program 8 times [2020-09-04 21:38:42,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:42,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794399316] [2020-09-04 21:38:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:43,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-09-04 21:38:44,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794399316] [2020-09-04 21:38:44,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:44,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-04 21:38:44,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465973763] [2020-09-04 21:38:44,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-04 21:38:44,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:44,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-04 21:38:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1638, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 21:38:44,784 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 42 states. [2020-09-04 21:38:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:49,126 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-09-04 21:38:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-09-04 21:38:49,126 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 165 [2020-09-04 21:38:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:49,128 INFO L225 Difference]: With dead ends: 202 [2020-09-04 21:38:49,128 INFO L226 Difference]: Without dead ends: 195 [2020-09-04 21:38:49,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=344, Invalid=8398, Unknown=0, NotChecked=0, Total=8742 [2020-09-04 21:38:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-04 21:38:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 118. [2020-09-04 21:38:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 21:38:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-09-04 21:38:49,168 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 165 [2020-09-04 21:38:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:49,169 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-09-04 21:38:49,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-04 21:38:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-09-04 21:38:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-04 21:38:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:49,171 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:49,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 21:38:49,171 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2102299316, now seen corresponding path program 8 times [2020-09-04 21:38:49,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:49,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76812163] [2020-09-04 21:38:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,402 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2020-09-04 21:38:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-09-04 21:38:51,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76812163] [2020-09-04 21:38:51,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:51,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-09-04 21:38:51,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836587404] [2020-09-04 21:38:51,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-04 21:38:51,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:51,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-04 21:38:51,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1804, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 21:38:51,686 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 44 states. [2020-09-04 21:38:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:38:56,472 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-09-04 21:38:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-04 21:38:56,472 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 174 [2020-09-04 21:38:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:38:56,475 INFO L225 Difference]: With dead ends: 212 [2020-09-04 21:38:56,475 INFO L226 Difference]: Without dead ends: 205 [2020-09-04 21:38:56,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=363, Invalid=9339, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 21:38:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-04 21:38:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 123. [2020-09-04 21:38:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-04 21:38:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-09-04 21:38:56,517 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 174 [2020-09-04 21:38:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:38:56,518 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-09-04 21:38:56,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-04 21:38:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-09-04 21:38:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-04 21:38:56,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:38:56,519 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:38:56,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 21:38:56,519 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:38:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:38:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1592061795, now seen corresponding path program 9 times [2020-09-04 21:38:56,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:38:56,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522127720] [2020-09-04 21:38:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:38:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:38:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:38:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:38:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:38:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-09-04 21:38:59,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522127720] [2020-09-04 21:38:59,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:38:59,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-09-04 21:38:59,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664560736] [2020-09-04 21:38:59,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-09-04 21:38:59,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:38:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-09-04 21:38:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1978, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 21:38:59,265 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 46 states. [2020-09-04 21:39:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:04,571 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-09-04 21:39:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-04 21:39:04,573 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 183 [2020-09-04 21:39:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:04,574 INFO L225 Difference]: With dead ends: 222 [2020-09-04 21:39:04,574 INFO L226 Difference]: Without dead ends: 215 [2020-09-04 21:39:04,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=382, Invalid=10330, Unknown=0, NotChecked=0, Total=10712 [2020-09-04 21:39:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-04 21:39:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 128. [2020-09-04 21:39:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-04 21:39:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-09-04 21:39:04,619 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 183 [2020-09-04 21:39:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:04,620 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-09-04 21:39:04,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-09-04 21:39:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-09-04 21:39:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-04 21:39:04,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:04,621 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:04,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 21:39:04,621 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:04,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1258819080, now seen corresponding path program 9 times [2020-09-04 21:39:04,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:04,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756812206] [2020-09-04 21:39:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:04,833 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:39:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-09-04 21:39:07,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756812206] [2020-09-04 21:39:07,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:39:07,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-09-04 21:39:07,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203522754] [2020-09-04 21:39:07,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 21:39:07,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:39:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 21:39:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 21:39:07,592 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 47 states. [2020-09-04 21:39:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:13,607 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-09-04 21:39:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-09-04 21:39:13,607 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 192 [2020-09-04 21:39:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:13,609 INFO L225 Difference]: With dead ends: 232 [2020-09-04 21:39:13,609 INFO L226 Difference]: Without dead ends: 225 [2020-09-04 21:39:13,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=395, Invalid=11161, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 21:39:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-09-04 21:39:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 133. [2020-09-04 21:39:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-09-04 21:39:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-09-04 21:39:13,668 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 192 [2020-09-04 21:39:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:13,670 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-09-04 21:39:13,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 21:39:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-09-04 21:39:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-04 21:39:13,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:13,672 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:13,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 21:39:13,673 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash -157065835, now seen corresponding path program 10 times [2020-09-04 21:39:13,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:13,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055078201] [2020-09-04 21:39:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:13,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-09-04 21:39:16,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055078201] [2020-09-04 21:39:16,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:39:16,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-09-04 21:39:16,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862382067] [2020-09-04 21:39:16,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-04 21:39:16,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:39:16,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-04 21:39:16,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2350, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 21:39:16,963 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 50 states. [2020-09-04 21:39:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:23,573 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-09-04 21:39:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-09-04 21:39:23,574 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 201 [2020-09-04 21:39:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:23,575 INFO L225 Difference]: With dead ends: 242 [2020-09-04 21:39:23,576 INFO L226 Difference]: Without dead ends: 235 [2020-09-04 21:39:23,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=420, Invalid=12462, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 21:39:23,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-04 21:39:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 138. [2020-09-04 21:39:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 21:39:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-09-04 21:39:23,634 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 201 [2020-09-04 21:39:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:23,634 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-09-04 21:39:23,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-04 21:39:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-09-04 21:39:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-04 21:39:23,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:23,636 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:23,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 21:39:23,636 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash 277767868, now seen corresponding path program 10 times [2020-09-04 21:39:23,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:23,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819935463] [2020-09-04 21:39:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:23,850 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:39:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-09-04 21:39:27,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819935463] [2020-09-04 21:39:27,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:39:27,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-09-04 21:39:27,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232043398] [2020-09-04 21:39:27,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 21:39:27,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:39:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 21:39:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 21:39:27,217 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 51 states. [2020-09-04 21:39:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:34,582 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-09-04 21:39:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-09-04 21:39:34,582 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 210 [2020-09-04 21:39:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:34,585 INFO L225 Difference]: With dead ends: 252 [2020-09-04 21:39:34,585 INFO L226 Difference]: Without dead ends: 245 [2020-09-04 21:39:34,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=433, Invalid=13373, Unknown=0, NotChecked=0, Total=13806 [2020-09-04 21:39:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-04 21:39:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 143. [2020-09-04 21:39:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-04 21:39:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-09-04 21:39:34,643 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 210 [2020-09-04 21:39:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:34,644 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-09-04 21:39:34,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 21:39:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-09-04 21:39:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 21:39:34,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:34,645 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:34,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 21:39:34,645 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:34,646 INFO L82 PathProgramCache]: Analyzing trace with hash 796676621, now seen corresponding path program 11 times [2020-09-04 21:39:34,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:34,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688601708] [2020-09-04 21:39:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:37,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:37,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:37,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-09-04 21:39:38,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688601708] [2020-09-04 21:39:38,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:39:38,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-09-04 21:39:38,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698064589] [2020-09-04 21:39:38,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-09-04 21:39:38,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:39:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-09-04 21:39:38,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2754, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 21:39:38,684 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 54 states. [2020-09-04 21:39:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:46,432 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-09-04 21:39:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-09-04 21:39:46,433 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 219 [2020-09-04 21:39:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:46,435 INFO L225 Difference]: With dead ends: 262 [2020-09-04 21:39:46,435 INFO L226 Difference]: Without dead ends: 255 [2020-09-04 21:39:46,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2694 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=458, Invalid=14794, Unknown=0, NotChecked=0, Total=15252 [2020-09-04 21:39:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-04 21:39:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 148. [2020-09-04 21:39:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-04 21:39:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-09-04 21:39:46,523 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 219 [2020-09-04 21:39:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:46,524 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-09-04 21:39:46,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-09-04 21:39:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-09-04 21:39:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-04 21:39:46,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:46,526 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:46,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 21:39:46,526 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash -415274752, now seen corresponding path program 11 times [2020-09-04 21:39:46,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:46,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694691191] [2020-09-04 21:39:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:39:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-09-04 21:39:50,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694691191] [2020-09-04 21:39:50,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:39:50,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-09-04 21:39:50,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218497752] [2020-09-04 21:39:50,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 21:39:50,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:39:50,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 21:39:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 21:39:50,823 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 55 states. [2020-09-04 21:39:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:39:59,601 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-09-04 21:39:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-09-04 21:39:59,601 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 228 [2020-09-04 21:39:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:39:59,603 INFO L225 Difference]: With dead ends: 272 [2020-09-04 21:39:59,603 INFO L226 Difference]: Without dead ends: 265 [2020-09-04 21:39:59,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=471, Invalid=15785, Unknown=0, NotChecked=0, Total=16256 [2020-09-04 21:39:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-04 21:39:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 153. [2020-09-04 21:39:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-04 21:39:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2020-09-04 21:39:59,685 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 228 [2020-09-04 21:39:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:39:59,685 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2020-09-04 21:39:59,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 21:39:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2020-09-04 21:39:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 21:39:59,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:39:59,687 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:39:59,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 21:39:59,687 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:39:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:39:59,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1996083707, now seen corresponding path program 12 times [2020-09-04 21:39:59,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:39:59,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76720095] [2020-09-04 21:39:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:39:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:59,953 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-09-04 21:39:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:39:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:39:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:39:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:03,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-09-04 21:40:04,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76720095] [2020-09-04 21:40:04,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:40:04,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-09-04 21:40:04,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367898210] [2020-09-04 21:40:04,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-09-04 21:40:04,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:40:04,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-09-04 21:40:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3190, Unknown=0, NotChecked=0, Total=3306 [2020-09-04 21:40:04,448 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 58 states. [2020-09-04 21:40:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:40:13,882 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2020-09-04 21:40:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-09-04 21:40:13,883 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 237 [2020-09-04 21:40:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:40:13,885 INFO L225 Difference]: With dead ends: 282 [2020-09-04 21:40:13,885 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 21:40:13,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=496, Invalid=17326, Unknown=0, NotChecked=0, Total=17822 [2020-09-04 21:40:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 21:40:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 158. [2020-09-04 21:40:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 21:40:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-09-04 21:40:13,978 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 237 [2020-09-04 21:40:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:40:13,978 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-09-04 21:40:13,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-09-04 21:40:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-09-04 21:40:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-04 21:40:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:40:13,980 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:40:13,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 21:40:13,980 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:40:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:40:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2046851268, now seen corresponding path program 12 times [2020-09-04 21:40:13,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:40:13,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105890228] [2020-09-04 21:40:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:40:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,212 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:40:14,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:40:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:40:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 744 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-09-04 21:40:18,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105890228] [2020-09-04 21:40:18,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:40:18,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-09-04 21:40:18,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212300543] [2020-09-04 21:40:18,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 21:40:18,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:40:18,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 21:40:18,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 21:40:18,917 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 59 states. [2020-09-04 21:40:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:40:29,142 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2020-09-04 21:40:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-09-04 21:40:29,143 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 246 [2020-09-04 21:40:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:40:29,145 INFO L225 Difference]: With dead ends: 292 [2020-09-04 21:40:29,145 INFO L226 Difference]: Without dead ends: 285 [2020-09-04 21:40:29,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3132 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=509, Invalid=18397, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 21:40:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-04 21:40:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 163. [2020-09-04 21:40:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-04 21:40:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-09-04 21:40:29,234 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 246 [2020-09-04 21:40:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:40:29,234 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-09-04 21:40:29,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 21:40:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-09-04 21:40:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-04 21:40:29,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:40:29,236 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:40:29,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 21:40:29,236 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:40:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:40:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash 229192061, now seen corresponding path program 13 times [2020-09-04 21:40:29,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:40:29,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385384463] [2020-09-04 21:40:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:40:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,532 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:40:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:40:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:40:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:30,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:32,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 806 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-09-04 21:40:34,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385384463] [2020-09-04 21:40:34,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:40:34,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-09-04 21:40:34,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762076895] [2020-09-04 21:40:34,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-09-04 21:40:34,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:40:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-09-04 21:40:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3658, Unknown=0, NotChecked=0, Total=3782 [2020-09-04 21:40:34,678 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 62 states. [2020-09-04 21:40:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:40:45,666 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2020-09-04 21:40:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-09-04 21:40:45,667 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 255 [2020-09-04 21:40:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:40:45,669 INFO L225 Difference]: With dead ends: 302 [2020-09-04 21:40:45,669 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 21:40:45,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3648 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=534, Invalid=20058, Unknown=0, NotChecked=0, Total=20592 [2020-09-04 21:40:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 21:40:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 168. [2020-09-04 21:40:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-04 21:40:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-09-04 21:40:45,813 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 255 [2020-09-04 21:40:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:40:45,814 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-09-04 21:40:45,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-09-04 21:40:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-09-04 21:40:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-04 21:40:45,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:40:45,816 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:40:45,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 21:40:45,816 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:40:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:40:45,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2140083720, now seen corresponding path program 13 times [2020-09-04 21:40:45,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:40:45,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640462747] [2020-09-04 21:40:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:40:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,092 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-09-04 21:40:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:40:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:40:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:40:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:40:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-09-04 21:40:51,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640462747] [2020-09-04 21:40:51,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:40:51,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-09-04 21:40:51,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737848712] [2020-09-04 21:40:51,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-09-04 21:40:51,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:40:51,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-09-04 21:40:51,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=3905, Unknown=0, NotChecked=0, Total=4032 [2020-09-04 21:40:51,733 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 64 states. [2020-09-04 21:41:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:41:04,164 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2020-09-04 21:41:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-09-04 21:41:04,165 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 264 [2020-09-04 21:41:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:41:04,167 INFO L225 Difference]: With dead ends: 312 [2020-09-04 21:41:04,167 INFO L226 Difference]: Without dead ends: 305 [2020-09-04 21:41:04,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=558, Invalid=21792, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 21:41:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-09-04 21:41:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 173. [2020-09-04 21:41:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-09-04 21:41:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-09-04 21:41:04,340 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 264 [2020-09-04 21:41:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:41:04,341 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-09-04 21:41:04,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-09-04 21:41:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-09-04 21:41:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-04 21:41:04,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:41:04,345 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:41:04,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 21:41:04,345 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:41:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:41:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2066375563, now seen corresponding path program 14 times [2020-09-04 21:41:04,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:41:04,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818430027] [2020-09-04 21:41:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:41:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:04,686 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:41:04,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:41:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:41:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 938 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-09-04 21:41:10,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818430027] [2020-09-04 21:41:10,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:41:10,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-09-04 21:41:10,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920300100] [2020-09-04 21:41:10,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-09-04 21:41:10,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:41:10,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-09-04 21:41:10,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4158, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 21:41:10,694 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 66 states. [2020-09-04 21:41:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:41:23,500 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2020-09-04 21:41:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-09-04 21:41:23,501 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 273 [2020-09-04 21:41:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:41:23,503 INFO L225 Difference]: With dead ends: 322 [2020-09-04 21:41:23,503 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 21:41:23,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=572, Invalid=22990, Unknown=0, NotChecked=0, Total=23562 [2020-09-04 21:41:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 21:41:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 178. [2020-09-04 21:41:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 21:41:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-09-04 21:41:23,617 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 273 [2020-09-04 21:41:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:41:23,617 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-09-04 21:41:23,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-09-04 21:41:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-09-04 21:41:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-04 21:41:23,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:41:23,620 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:41:23,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 21:41:23,620 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:41:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:41:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 812695756, now seen corresponding path program 14 times [2020-09-04 21:41:23,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:41:23,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882222785] [2020-09-04 21:41:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:41:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:23,907 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2020-09-04 21:41:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:41:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:41:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-09-04 21:41:30,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882222785] [2020-09-04 21:41:30,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:41:30,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-09-04 21:41:30,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864810937] [2020-09-04 21:41:30,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-04 21:41:30,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:41:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-04 21:41:30,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4420, Unknown=0, NotChecked=0, Total=4556 [2020-09-04 21:41:30,526 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 68 states. [2020-09-04 21:41:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:41:44,455 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2020-09-04 21:41:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-09-04 21:41:44,456 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 282 [2020-09-04 21:41:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:41:44,458 INFO L225 Difference]: With dead ends: 332 [2020-09-04 21:41:44,458 INFO L226 Difference]: Without dead ends: 325 [2020-09-04 21:41:44,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4458 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=591, Invalid=24531, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 21:41:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-04 21:41:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 183. [2020-09-04 21:41:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-04 21:41:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2020-09-04 21:41:44,683 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 282 [2020-09-04 21:41:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:41:44,683 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2020-09-04 21:41:44,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-09-04 21:41:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2020-09-04 21:41:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-04 21:41:44,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:41:44,687 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:41:44,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 21:41:44,687 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:41:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:41:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash -486297875, now seen corresponding path program 15 times [2020-09-04 21:41:44,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:41:44,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851925079] [2020-09-04 21:41:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:41:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,057 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:41:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:41:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:41:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:47,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:41:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:41:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-09-04 21:41:52,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851925079] [2020-09-04 21:41:52,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:41:52,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-09-04 21:41:52,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039106435] [2020-09-04 21:41:52,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-09-04 21:41:52,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:41:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-09-04 21:41:52,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4690, Unknown=0, NotChecked=0, Total=4830 [2020-09-04 21:41:52,112 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 70 states. [2020-09-04 21:42:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:42:07,279 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2020-09-04 21:42:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-09-04 21:42:07,280 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 291 [2020-09-04 21:42:07,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:42:07,282 INFO L225 Difference]: With dead ends: 342 [2020-09-04 21:42:07,282 INFO L226 Difference]: Without dead ends: 335 [2020-09-04 21:42:07,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=610, Invalid=26122, Unknown=0, NotChecked=0, Total=26732 [2020-09-04 21:42:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-04 21:42:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 188. [2020-09-04 21:42:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-04 21:42:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2020-09-04 21:42:07,438 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 291 [2020-09-04 21:42:07,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:42:07,438 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2020-09-04 21:42:07,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-09-04 21:42:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2020-09-04 21:42:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-04 21:42:07,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:42:07,440 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:42:07,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 21:42:07,440 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:42:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:42:07,441 INFO L82 PathProgramCache]: Analyzing trace with hash -755828464, now seen corresponding path program 15 times [2020-09-04 21:42:07,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:42:07,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800418664] [2020-09-04 21:42:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:42:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:07,746 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:42:07,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:42:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:42:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-09-04 21:42:15,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800418664] [2020-09-04 21:42:15,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:42:15,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-09-04 21:42:15,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502197129] [2020-09-04 21:42:15,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 21:42:15,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:42:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 21:42:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 21:42:15,949 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 71 states. [2020-09-04 21:42:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:42:33,457 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2020-09-04 21:42:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-09-04 21:42:33,458 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 300 [2020-09-04 21:42:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:42:33,460 INFO L225 Difference]: With dead ends: 352 [2020-09-04 21:42:33,460 INFO L226 Difference]: Without dead ends: 345 [2020-09-04 21:42:33,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4719 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=623, Invalid=27433, Unknown=0, NotChecked=0, Total=28056 [2020-09-04 21:42:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-09-04 21:42:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 193. [2020-09-04 21:42:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-04 21:42:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2020-09-04 21:42:33,615 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 300 [2020-09-04 21:42:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:42:33,615 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2020-09-04 21:42:33,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 21:42:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2020-09-04 21:42:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-04 21:42:33,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:42:33,618 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:42:33,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 21:42:33,618 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:42:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:42:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash 968075493, now seen corresponding path program 16 times [2020-09-04 21:42:33,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:42:33,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285004321] [2020-09-04 21:42:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:42:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:33,954 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-09-04 21:42:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:42:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:42:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:36,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:37,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:42:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:42:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2240 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-09-04 21:42:42,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285004321] [2020-09-04 21:42:42,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:42:42,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-09-04 21:42:42,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750094012] [2020-09-04 21:42:42,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-09-04 21:42:42,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:42:42,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-09-04 21:42:42,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5254, Unknown=0, NotChecked=0, Total=5402 [2020-09-04 21:42:42,360 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 74 states. [2020-09-04 21:43:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:43:00,740 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2020-09-04 21:43:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-09-04 21:43:00,742 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 309 [2020-09-04 21:43:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:43:00,744 INFO L225 Difference]: With dead ends: 362 [2020-09-04 21:43:00,744 INFO L226 Difference]: Without dead ends: 355 [2020-09-04 21:43:00,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5349 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=648, Invalid=29454, Unknown=0, NotChecked=0, Total=30102 [2020-09-04 21:43:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-09-04 21:43:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 198. [2020-09-04 21:43:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 21:43:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-09-04 21:43:01,035 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 309 [2020-09-04 21:43:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:43:01,035 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-09-04 21:43:01,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-09-04 21:43:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-09-04 21:43:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-09-04 21:43:01,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:43:01,038 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:43:01,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 21:43:01,038 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:43:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:43:01,039 INFO L82 PathProgramCache]: Analyzing trace with hash -953467180, now seen corresponding path program 16 times [2020-09-04 21:43:01,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:43:01,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125602084] [2020-09-04 21:43:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:43:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,319 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 15 [2020-09-04 21:43:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:43:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:43:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:02,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:03,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:08,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2384 backedges. 0 proven. 1312 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-09-04 21:43:10,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125602084] [2020-09-04 21:43:10,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:43:10,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-09-04 21:43:10,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461902070] [2020-09-04 21:43:10,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 21:43:10,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:43:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 21:43:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 21:43:10,845 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 75 states. [2020-09-04 21:43:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:43:30,909 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2020-09-04 21:43:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-09-04 21:43:30,909 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 318 [2020-09-04 21:43:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:43:30,911 INFO L225 Difference]: With dead ends: 372 [2020-09-04 21:43:30,911 INFO L226 Difference]: Without dead ends: 365 [2020-09-04 21:43:30,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5320 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=661, Invalid=30845, Unknown=0, NotChecked=0, Total=31506 [2020-09-04 21:43:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-09-04 21:43:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 203. [2020-09-04 21:43:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-04 21:43:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2020-09-04 21:43:31,151 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 318 [2020-09-04 21:43:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:43:31,152 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2020-09-04 21:43:31,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 21:43:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2020-09-04 21:43:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-04 21:43:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:43:31,155 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:43:31,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 21:43:31,155 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:43:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:43:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash 661506653, now seen corresponding path program 17 times [2020-09-04 21:43:31,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:43:31,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457886176] [2020-09-04 21:43:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:43:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:31,513 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-09-04 21:43:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:43:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:43:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:37,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:38,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:43:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:43:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2533 backedges. 0 proven. 1394 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-09-04 21:43:41,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457886176] [2020-09-04 21:43:41,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:43:41,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-09-04 21:43:41,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716431529] [2020-09-04 21:43:41,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-09-04 21:43:41,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:43:41,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-09-04 21:43:41,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=5850, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 21:43:41,313 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 78 states. [2020-09-04 21:44:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:44:03,787 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2020-09-04 21:44:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-09-04 21:44:03,788 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 327 [2020-09-04 21:44:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:44:03,790 INFO L225 Difference]: With dead ends: 382 [2020-09-04 21:44:03,790 INFO L226 Difference]: Without dead ends: 375 [2020-09-04 21:44:03,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5988 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=686, Invalid=32986, Unknown=0, NotChecked=0, Total=33672 [2020-09-04 21:44:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-09-04 21:44:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 208. [2020-09-04 21:44:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-04 21:44:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2020-09-04 21:44:04,031 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 327 [2020-09-04 21:44:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:44:04,031 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2020-09-04 21:44:04,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-09-04 21:44:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2020-09-04 21:44:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-09-04 21:44:04,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:44:04,034 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:44:04,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 21:44:04,035 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:44:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:44:04,035 INFO L82 PathProgramCache]: Analyzing trace with hash 318181912, now seen corresponding path program 17 times [2020-09-04 21:44:04,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:44:04,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162523695] [2020-09-04 21:44:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:44:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:04,412 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-09-04 21:44:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:44:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:44:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:09,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:11,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 1479 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-09-04 21:44:15,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162523695] [2020-09-04 21:44:15,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:44:15,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-09-04 21:44:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212934877] [2020-09-04 21:44:15,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-09-04 21:44:15,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:44:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-09-04 21:44:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6161, Unknown=0, NotChecked=0, Total=6320 [2020-09-04 21:44:15,478 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 80 states. [2020-09-04 21:44:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:44:39,299 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2020-09-04 21:44:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-09-04 21:44:39,299 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 336 [2020-09-04 21:44:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:44:39,301 INFO L225 Difference]: With dead ends: 392 [2020-09-04 21:44:39,301 INFO L226 Difference]: Without dead ends: 385 [2020-09-04 21:44:39,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=710, Invalid=35200, Unknown=0, NotChecked=0, Total=35910 [2020-09-04 21:44:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-09-04 21:44:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 213. [2020-09-04 21:44:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 21:44:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2020-09-04 21:44:39,562 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 336 [2020-09-04 21:44:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:44:39,563 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2020-09-04 21:44:39,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-09-04 21:44:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2020-09-04 21:44:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 21:44:39,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:44:39,566 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:44:39,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 21:44:39,567 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:44:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:44:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash -943565995, now seen corresponding path program 18 times [2020-09-04 21:44:39,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:44:39,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549838989] [2020-09-04 21:44:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:44:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:39,935 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:44:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:44:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:44:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:45,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:45,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:44:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:44:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 0 proven. 1566 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-09-04 21:44:51,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549838989] [2020-09-04 21:44:51,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:44:51,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-09-04 21:44:51,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250271427] [2020-09-04 21:44:51,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-09-04 21:44:51,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:44:51,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-09-04 21:44:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6478, Unknown=0, NotChecked=0, Total=6642 [2020-09-04 21:44:51,762 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 82 states. [2020-09-04 21:45:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:45:15,826 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2020-09-04 21:45:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-09-04 21:45:15,828 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 345 [2020-09-04 21:45:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:45:15,830 INFO L225 Difference]: With dead ends: 402 [2020-09-04 21:45:15,830 INFO L226 Difference]: Without dead ends: 395 [2020-09-04 21:45:15,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6663 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=724, Invalid=36718, Unknown=0, NotChecked=0, Total=37442 [2020-09-04 21:45:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-04 21:45:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 218. [2020-09-04 21:45:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-04 21:45:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2020-09-04 21:45:16,039 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 345 [2020-09-04 21:45:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:45:16,039 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2020-09-04 21:45:16,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-09-04 21:45:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2020-09-04 21:45:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-09-04 21:45:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:45:16,042 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:45:16,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 21:45:16,042 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:45:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:45:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1845228252, now seen corresponding path program 18 times [2020-09-04 21:45:16,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:45:16,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31169085] [2020-09-04 21:45:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:45:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:16,388 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 [2020-09-04 21:45:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:45:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:45:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:16,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:18,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:18,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 0 proven. 1656 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-09-04 21:45:28,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31169085] [2020-09-04 21:45:28,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:45:28,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-09-04 21:45:28,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501830762] [2020-09-04 21:45:28,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-09-04 21:45:28,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:45:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-09-04 21:45:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6805, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 21:45:28,723 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 84 states. [2020-09-04 21:45:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:45:57,342 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2020-09-04 21:45:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-09-04 21:45:57,342 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 354 [2020-09-04 21:45:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:45:57,344 INFO L225 Difference]: With dead ends: 412 [2020-09-04 21:45:57,344 INFO L226 Difference]: Without dead ends: 405 [2020-09-04 21:45:57,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6938 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=748, Invalid=39052, Unknown=0, NotChecked=0, Total=39800 [2020-09-04 21:45:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-04 21:45:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 223. [2020-09-04 21:45:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-04 21:45:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2020-09-04 21:45:57,651 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 354 [2020-09-04 21:45:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:45:57,651 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2020-09-04 21:45:57,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-09-04 21:45:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2020-09-04 21:45:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-09-04 21:45:57,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:45:57,653 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:45:57,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 21:45:57,653 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:45:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:45:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 592020429, now seen corresponding path program 19 times [2020-09-04 21:45:57,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:45:57,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563652053] [2020-09-04 21:45:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:45:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,084 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:45:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:45:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:45:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:45:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:45:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:00,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:04,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:05,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:08,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 1748 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-09-04 21:46:12,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563652053] [2020-09-04 21:46:12,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:46:12,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-09-04 21:46:12,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673889299] [2020-09-04 21:46:12,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-09-04 21:46:12,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:46:12,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-09-04 21:46:12,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7138, Unknown=0, NotChecked=0, Total=7310 [2020-09-04 21:46:12,300 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 86 states. [2020-09-04 21:46:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:46:42,811 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2020-09-04 21:46:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-09-04 21:46:42,812 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 363 [2020-09-04 21:46:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:46:42,814 INFO L225 Difference]: With dead ends: 422 [2020-09-04 21:46:42,814 INFO L226 Difference]: Without dead ends: 415 [2020-09-04 21:46:42,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7374 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=762, Invalid=40650, Unknown=0, NotChecked=0, Total=41412 [2020-09-04 21:46:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-09-04 21:46:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 228. [2020-09-04 21:46:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-04 21:46:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 230 transitions. [2020-09-04 21:46:43,071 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 230 transitions. Word has length 363 [2020-09-04 21:46:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:46:43,072 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 230 transitions. [2020-09-04 21:46:43,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-09-04 21:46:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 230 transitions. [2020-09-04 21:46:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-09-04 21:46:43,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:46:43,074 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:46:43,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 21:46:43,075 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:46:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:46:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash -844668640, now seen corresponding path program 19 times [2020-09-04 21:46:43,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:46:43,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526484737] [2020-09-04 21:46:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:46:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:43,451 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 16 [2020-09-04 21:46:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:46:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:46:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:44,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:45,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:45,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:53,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:53,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:46:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:46:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 1843 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-09-04 21:46:58,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526484737] [2020-09-04 21:46:58,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:46:58,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-09-04 21:46:58,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710203757] [2020-09-04 21:46:58,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 21:46:58,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:46:58,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 21:46:58,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 21:46:58,688 INFO L87 Difference]: Start difference. First operand 228 states and 230 transitions. Second operand 87 states. [2020-09-04 21:47:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:47:32,400 INFO L93 Difference]: Finished difference Result 432 states and 434 transitions. [2020-09-04 21:47:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-09-04 21:47:32,401 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 372 [2020-09-04 21:47:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:47:32,403 INFO L225 Difference]: With dead ends: 432 [2020-09-04 21:47:32,403 INFO L226 Difference]: Without dead ends: 425 [2020-09-04 21:47:32,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7339 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=775, Invalid=42281, Unknown=0, NotChecked=0, Total=43056 [2020-09-04 21:47:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-09-04 21:47:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 233. [2020-09-04 21:47:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-04 21:47:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2020-09-04 21:47:32,688 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 372 [2020-09-04 21:47:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:47:32,688 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2020-09-04 21:47:32,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 21:47:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2020-09-04 21:47:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-09-04 21:47:32,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:47:32,691 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:47:32,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 21:47:32,691 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:47:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:47:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash 530815941, now seen corresponding path program 20 times [2020-09-04 21:47:32,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:47:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730027271] [2020-09-04 21:47:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:47:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,124 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-09-04 21:47:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:47:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:47:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:34,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:37,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:37,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:40,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:41,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:42,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:47:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:47:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3520 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-09-04 21:47:49,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730027271] [2020-09-04 21:47:49,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:47:49,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-09-04 21:47:49,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175818975] [2020-09-04 21:47:49,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-09-04 21:47:49,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:47:49,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-09-04 21:47:49,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=7830, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 21:47:49,348 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 90 states. [2020-09-04 21:48:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:48:24,994 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2020-09-04 21:48:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2020-09-04 21:48:24,996 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 381 [2020-09-04 21:48:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:48:24,999 INFO L225 Difference]: With dead ends: 442 [2020-09-04 21:48:24,999 INFO L226 Difference]: Without dead ends: 435 [2020-09-04 21:48:25,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8121 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=800, Invalid=44782, Unknown=0, NotChecked=0, Total=45582 [2020-09-04 21:48:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-04 21:48:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 238. [2020-09-04 21:48:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-04 21:48:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2020-09-04 21:48:25,319 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 381 [2020-09-04 21:48:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:48:25,320 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2020-09-04 21:48:25,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-09-04 21:48:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2020-09-04 21:48:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-09-04 21:48:25,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:48:25,323 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:48:25,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 21:48:25,323 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:48:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:48:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1898896612, now seen corresponding path program 20 times [2020-09-04 21:48:25,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:48:25,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138154593] [2020-09-04 21:48:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:48:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:25,666 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-04 21:48:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:48:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:48:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:29,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:35,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:39,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:48:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:48:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3700 backedges. 0 proven. 2040 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2020-09-04 21:48:42,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138154593] [2020-09-04 21:48:42,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:48:42,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-09-04 21:48:42,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817697184] [2020-09-04 21:48:42,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-09-04 21:48:42,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:48:42,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-09-04 21:48:42,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8188, Unknown=0, NotChecked=0, Total=8372 [2020-09-04 21:48:42,779 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand 92 states. [2020-09-04 21:49:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:49:22,516 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2020-09-04 21:49:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2020-09-04 21:49:22,517 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 390 [2020-09-04 21:49:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:49:22,519 INFO L225 Difference]: With dead ends: 452 [2020-09-04 21:49:22,519 INFO L226 Difference]: Without dead ends: 445 [2020-09-04 21:49:22,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8508 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=819, Invalid=46923, Unknown=0, NotChecked=0, Total=47742 [2020-09-04 21:49:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-04 21:49:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 243. [2020-09-04 21:49:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 21:49:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2020-09-04 21:49:22,829 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 390 [2020-09-04 21:49:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:49:22,829 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2020-09-04 21:49:22,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-09-04 21:49:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2020-09-04 21:49:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-09-04 21:49:22,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:49:22,832 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:49:22,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 21:49:22,832 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:49:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:49:22,833 INFO L82 PathProgramCache]: Analyzing trace with hash -277292227, now seen corresponding path program 21 times [2020-09-04 21:49:22,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:49:22,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083427040] [2020-09-04 21:49:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:49:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:23,116 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-09-04 21:49:23,313 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-09-04 21:49:23,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:49:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:49:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:24,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:27,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:29,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:38,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:49:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:49:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 0 proven. 2142 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2020-09-04 21:49:43,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083427040] [2020-09-04 21:49:43,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:49:43,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-09-04 21:49:43,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193055661] [2020-09-04 21:49:43,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-09-04 21:49:43,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:49:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-09-04 21:49:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8554, Unknown=0, NotChecked=0, Total=8742 [2020-09-04 21:49:43,092 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 94 states. [2020-09-04 21:50:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:50:28,547 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2020-09-04 21:50:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2020-09-04 21:50:28,549 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 399 [2020-09-04 21:50:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:50:28,552 INFO L225 Difference]: With dead ends: 462 [2020-09-04 21:50:28,552 INFO L226 Difference]: Without dead ends: 455 [2020-09-04 21:50:28,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8904 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=838, Invalid=49114, Unknown=0, NotChecked=0, Total=49952 [2020-09-04 21:50:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-09-04 21:50:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 248. [2020-09-04 21:50:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 21:50:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 250 transitions. [2020-09-04 21:50:28,933 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 250 transitions. Word has length 399 [2020-09-04 21:50:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:50:28,934 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 250 transitions. [2020-09-04 21:50:28,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-09-04 21:50:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 250 transitions. [2020-09-04 21:50:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-04 21:50:28,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:50:28,969 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:50:28,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 21:50:28,969 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:50:28,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:50:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1838147112, now seen corresponding path program 21 times [2020-09-04 21:50:28,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:50:28,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078277956] [2020-09-04 21:50:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:50:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:29,370 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-04 21:50:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:50:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:50:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:30,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:50:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:50:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat