/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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:05:01,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:05:01,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:05:01,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:05:01,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:05:01,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:05:01,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:05:01,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:05:01,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:05:01,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:05:01,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:05:01,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:05:01,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:05:01,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:05:01,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:05:01,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:05:01,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:05:01,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:05:01,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:05:01,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:05:01,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:05:01,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:05:01,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:05:01,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:05:01,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:05:01,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:05:01,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:05:01,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:05:01,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:05:01,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:05:01,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:05:01,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:05:01,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:05:01,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:05:01,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:05:01,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:05:01,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:05:01,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:05:01,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:05:01,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:05:01,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:05:01,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:05:01,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:05:01,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:05:01,855 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:05:01,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:05:01,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:05:01,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:05:01,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:05:01,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:05:01,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:05:01,856 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 [2020-07-17 17:05:02,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:05:02,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:05:02,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:05:02,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:05:02,197 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:05:02,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-17 17:05:02,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0162ca7/d17be240a03d4d07a0575b2f3ac3d718/FLAG91fc052af [2020-07-17 17:05:02,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:05:02,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-17 17:05:02,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0162ca7/d17be240a03d4d07a0575b2f3ac3d718/FLAG91fc052af [2020-07-17 17:05:03,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0162ca7/d17be240a03d4d07a0575b2f3ac3d718 [2020-07-17 17:05:03,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:05:03,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:05:03,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:05:03,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:05:03,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:05:03,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59308fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03, skipping insertion in model container [2020-07-17 17:05:03,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:05:03,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:05:03,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:05:03,305 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:05:03,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:05:03,340 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:05:03,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03 WrapperNode [2020-07-17 17:05:03,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:05:03,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:05:03,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:05:03,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:05:03,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... [2020-07-17 17:05:03,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:05:03,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:05:03,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:05:03,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:05:03,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:05:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:05:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:05:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-17 17:05:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:05:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:05:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:05:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-17 17:05:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:05:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:05:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:05:03,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:05:03,803 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:05:03,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:05:03 BoogieIcfgContainer [2020-07-17 17:05:03,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:05:03,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:05:03,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:05:03,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:05:03,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:05:03" (1/3) ... [2020-07-17 17:05:03,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c81c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:05:03, skipping insertion in model container [2020-07-17 17:05:03,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:05:03" (2/3) ... [2020-07-17 17:05:03,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c81c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:05:03, skipping insertion in model container [2020-07-17 17:05:03,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:05:03" (3/3) ... [2020-07-17 17:05:03,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-07-17 17:05:03,827 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:05:03,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:05:03,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:05:03,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:05:03,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:05:03,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:05:03,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:05:03,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:05:03,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:05:03,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:05:03,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:05:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-17 17:05:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 17:05:03,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:03,897 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] [2020-07-17 17:05:03,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:03,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1218957033, now seen corresponding path program 1 times [2020-07-17 17:05:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:03,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705287450] [2020-07-17 17:05:03,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:05:04,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705287450] [2020-07-17 17:05:04,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:05:04,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 17:05:04,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908645839] [2020-07-17 17:05:04,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 17:05:04,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 17:05:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:05:04,167 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-07-17 17:05:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:04,324 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-07-17 17:05:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 17:05:04,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-17 17:05:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:04,335 INFO L225 Difference]: With dead ends: 53 [2020-07-17 17:05:04,336 INFO L226 Difference]: Without dead ends: 35 [2020-07-17 17:05:04,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:05:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-17 17:05:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-17 17:05:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-17 17:05:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-07-17 17:05:04,392 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 22 [2020-07-17 17:05:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:04,393 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-07-17 17:05:04,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 17:05:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-07-17 17:05:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 17:05:04,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:04,397 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] [2020-07-17 17:05:04,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:05:04,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1947313727, now seen corresponding path program 1 times [2020-07-17 17:05:04,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:04,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24797231] [2020-07-17 17:05:04,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:05:04,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24797231] [2020-07-17 17:05:04,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:05:04,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:05:04,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462279596] [2020-07-17 17:05:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:05:04,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:05:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:05:04,480 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 4 states. [2020-07-17 17:05:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:04,521 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-17 17:05:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:05:04,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-17 17:05:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:04,524 INFO L225 Difference]: With dead ends: 51 [2020-07-17 17:05:04,524 INFO L226 Difference]: Without dead ends: 37 [2020-07-17 17:05:04,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:05:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-17 17:05:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-17 17:05:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-17 17:05:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-17 17:05:04,540 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2020-07-17 17:05:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:04,540 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-17 17:05:04,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:05:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-17 17:05:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 17:05:04,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:04,543 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] [2020-07-17 17:05:04,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:05:04,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1438677315, now seen corresponding path program 1 times [2020-07-17 17:05:04,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:04,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732183871] [2020-07-17 17:05:04,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 17:05:04,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732183871] [2020-07-17 17:05:04,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:04,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-17 17:05:04,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514125143] [2020-07-17 17:05:04,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:05:04,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:04,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:05:04,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:05:04,709 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-07-17 17:05:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:04,809 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-07-17 17:05:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:05:04,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-07-17 17:05:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:04,812 INFO L225 Difference]: With dead ends: 46 [2020-07-17 17:05:04,812 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 17:05:04,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:05:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 17:05:04,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-17 17:05:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 17:05:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-07-17 17:05:04,827 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 32 [2020-07-17 17:05:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-07-17 17:05:04,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:05:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-07-17 17:05:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 17:05:04,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:04,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:04,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:05:04,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash 967575145, now seen corresponding path program 2 times [2020-07-17 17:05:04,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:04,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319898628] [2020-07-17 17:05:04,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 17:05:05,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319898628] [2020-07-17 17:05:05,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:05,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 17:05:05,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068028813] [2020-07-17 17:05:05,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:05:05,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:05:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:05:05,029 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-07-17 17:05:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:05,207 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-07-17 17:05:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 17:05:05,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-07-17 17:05:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:05,210 INFO L225 Difference]: With dead ends: 66 [2020-07-17 17:05:05,210 INFO L226 Difference]: Without dead ends: 60 [2020-07-17 17:05:05,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:05:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-17 17:05:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-17 17:05:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-17 17:05:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-07-17 17:05:05,228 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 42 [2020-07-17 17:05:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:05,229 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-07-17 17:05:05,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:05:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-07-17 17:05:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 17:05:05,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:05,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2020-07-17 17:05:05,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:05:05,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash -321617853, now seen corresponding path program 3 times [2020-07-17 17:05:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116839836] [2020-07-17 17:05:05,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-17 17:05:05,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116839836] [2020-07-17 17:05:05,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:05,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-17 17:05:05,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581982274] [2020-07-17 17:05:05,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:05:05,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:05:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:05:05,422 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 8 states. [2020-07-17 17:05:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:05,568 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-07-17 17:05:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:05:05,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-17 17:05:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:05,571 INFO L225 Difference]: With dead ends: 71 [2020-07-17 17:05:05,571 INFO L226 Difference]: Without dead ends: 65 [2020-07-17 17:05:05,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:05:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-17 17:05:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-17 17:05:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-17 17:05:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-07-17 17:05:05,587 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 52 [2020-07-17 17:05:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:05,588 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-07-17 17:05:05,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:05:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-07-17 17:05:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-17 17:05:05,591 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:05,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1] [2020-07-17 17:05:05,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:05:05,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1776668137, now seen corresponding path program 4 times [2020-07-17 17:05:05,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:05,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811139357] [2020-07-17 17:05:05,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-07-17 17:05:05,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811139357] [2020-07-17 17:05:05,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:05,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 17:05:05,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477601002] [2020-07-17 17:05:05,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:05:05,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:05:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:05:05,754 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 9 states. [2020-07-17 17:05:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:05,909 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-07-17 17:05:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:05:05,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-07-17 17:05:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:05,911 INFO L225 Difference]: With dead ends: 76 [2020-07-17 17:05:05,912 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 17:05:05,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:05:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 17:05:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-17 17:05:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 17:05:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-07-17 17:05:05,928 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 62 [2020-07-17 17:05:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:05,929 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-07-17 17:05:05,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:05:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-07-17 17:05:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-17 17:05:05,932 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:05,933 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2020-07-17 17:05:05,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:05:05,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1043024061, now seen corresponding path program 5 times [2020-07-17 17:05:05,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:05,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110425045] [2020-07-17 17:05:05,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-07-17 17:05:06,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110425045] [2020-07-17 17:05:06,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:06,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 17:05:06,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183836793] [2020-07-17 17:05:06,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:05:06,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:06,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:05:06,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:05:06,248 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 10 states. [2020-07-17 17:05:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:06,422 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-07-17 17:05:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:05:06,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-07-17 17:05:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:06,425 INFO L225 Difference]: With dead ends: 81 [2020-07-17 17:05:06,425 INFO L226 Difference]: Without dead ends: 75 [2020-07-17 17:05:06,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:05:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-17 17:05:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-17 17:05:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-17 17:05:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-07-17 17:05:06,439 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 72 [2020-07-17 17:05:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:06,440 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-07-17 17:05:06,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:05:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-07-17 17:05:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 17:05:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:06,443 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1] [2020-07-17 17:05:06,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:05:06,444 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -473356951, now seen corresponding path program 6 times [2020-07-17 17:05:06,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:06,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065382809] [2020-07-17 17:05:06,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-07-17 17:05:06,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065382809] [2020-07-17 17:05:06,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:06,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-17 17:05:06,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503850449] [2020-07-17 17:05:06,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 17:05:06,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:06,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 17:05:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:05:06,658 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 11 states. [2020-07-17 17:05:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:06,862 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-07-17 17:05:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 17:05:06,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-07-17 17:05:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:06,864 INFO L225 Difference]: With dead ends: 86 [2020-07-17 17:05:06,865 INFO L226 Difference]: Without dead ends: 80 [2020-07-17 17:05:06,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:05:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-17 17:05:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-17 17:05:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-17 17:05:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-07-17 17:05:06,889 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 82 [2020-07-17 17:05:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:06,890 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-07-17 17:05:06,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 17:05:06,890 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-07-17 17:05:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-17 17:05:06,892 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:06,892 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1] [2020-07-17 17:05:06,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:05:06,892 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1366105667, now seen corresponding path program 7 times [2020-07-17 17:05:06,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:06,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772011288] [2020-07-17 17:05:06,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-07-17 17:05:07,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772011288] [2020-07-17 17:05:07,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:07,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-07-17 17:05:07,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876239803] [2020-07-17 17:05:07,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:05:07,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:05:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:05:07,203 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 12 states. [2020-07-17 17:05:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:07,427 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-07-17 17:05:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:05:07,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-07-17 17:05:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:07,429 INFO L225 Difference]: With dead ends: 91 [2020-07-17 17:05:07,429 INFO L226 Difference]: Without dead ends: 85 [2020-07-17 17:05:07,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-07-17 17:05:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-17 17:05:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-07-17 17:05:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 17:05:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-07-17 17:05:07,443 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 92 [2020-07-17 17:05:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:07,444 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-07-17 17:05:07,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:05:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-07-17 17:05:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-17 17:05:07,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:07,446 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1] [2020-07-17 17:05:07,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:05:07,446 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:07,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1932915479, now seen corresponding path program 8 times [2020-07-17 17:05:07,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:07,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363503168] [2020-07-17 17:05:07,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-07-17 17:05:07,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363503168] [2020-07-17 17:05:07,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:07,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-17 17:05:07,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35463498] [2020-07-17 17:05:07,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 17:05:07,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:07,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 17:05:07,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:05:07,736 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 13 states. [2020-07-17 17:05:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:07,933 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-07-17 17:05:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 17:05:07,933 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-07-17 17:05:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:07,935 INFO L225 Difference]: With dead ends: 96 [2020-07-17 17:05:07,935 INFO L226 Difference]: Without dead ends: 90 [2020-07-17 17:05:07,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-07-17 17:05:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-17 17:05:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-07-17 17:05:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-17 17:05:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-07-17 17:05:07,950 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 102 [2020-07-17 17:05:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:07,951 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-07-17 17:05:07,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 17:05:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-07-17 17:05:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-17 17:05:07,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:07,954 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1] [2020-07-17 17:05:07,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:05:07,954 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:07,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1924549309, now seen corresponding path program 9 times [2020-07-17 17:05:07,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:07,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122761958] [2020-07-17 17:05:07,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-07-17 17:05:08,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122761958] [2020-07-17 17:05:08,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:08,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-17 17:05:08,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133494437] [2020-07-17 17:05:08,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 17:05:08,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:08,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 17:05:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:05:08,309 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 14 states. [2020-07-17 17:05:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:08,514 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-07-17 17:05:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 17:05:08,515 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-07-17 17:05:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:08,516 INFO L225 Difference]: With dead ends: 101 [2020-07-17 17:05:08,517 INFO L226 Difference]: Without dead ends: 95 [2020-07-17 17:05:08,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:05:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-17 17:05:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-07-17 17:05:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-17 17:05:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-07-17 17:05:08,537 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 112 [2020-07-17 17:05:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:08,538 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-07-17 17:05:08,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 17:05:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-07-17 17:05:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-17 17:05:08,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:08,541 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1] [2020-07-17 17:05:08,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:05:08,541 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1700562025, now seen corresponding path program 10 times [2020-07-17 17:05:08,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:08,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790912627] [2020-07-17 17:05:08,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-07-17 17:05:08,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790912627] [2020-07-17 17:05:08,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:08,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-07-17 17:05:08,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798023050] [2020-07-17 17:05:08,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 17:05:08,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 17:05:08,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:05:08,977 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 15 states. [2020-07-17 17:05:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:09,255 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-07-17 17:05:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 17:05:09,256 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 122 [2020-07-17 17:05:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:09,258 INFO L225 Difference]: With dead ends: 106 [2020-07-17 17:05:09,258 INFO L226 Difference]: Without dead ends: 100 [2020-07-17 17:05:09,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-07-17 17:05:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-17 17:05:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-17 17:05:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-17 17:05:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-07-17 17:05:09,277 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 122 [2020-07-17 17:05:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:09,278 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-07-17 17:05:09,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 17:05:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-07-17 17:05:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-17 17:05:09,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:09,295 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1] [2020-07-17 17:05:09,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 17:05:09,295 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1676247997, now seen corresponding path program 11 times [2020-07-17 17:05:09,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:09,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103836030] [2020-07-17 17:05:09,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-07-17 17:05:09,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103836030] [2020-07-17 17:05:09,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:09,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-07-17 17:05:09,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038513564] [2020-07-17 17:05:09,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 17:05:09,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 17:05:09,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:05:09,823 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 16 states. [2020-07-17 17:05:10,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:10,038 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-07-17 17:05:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 17:05:10,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 132 [2020-07-17 17:05:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:10,040 INFO L225 Difference]: With dead ends: 111 [2020-07-17 17:05:10,040 INFO L226 Difference]: Without dead ends: 105 [2020-07-17 17:05:10,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-07-17 17:05:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-17 17:05:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-17 17:05:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-17 17:05:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-07-17 17:05:10,052 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 132 [2020-07-17 17:05:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:10,052 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-07-17 17:05:10,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 17:05:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-07-17 17:05:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-17 17:05:10,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:10,055 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 1] [2020-07-17 17:05:10,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 17:05:10,055 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash -923497495, now seen corresponding path program 12 times [2020-07-17 17:05:10,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:10,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480080017] [2020-07-17 17:05:10,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-07-17 17:05:10,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480080017] [2020-07-17 17:05:10,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:10,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-07-17 17:05:10,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441146915] [2020-07-17 17:05:10,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 17:05:10,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 17:05:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-07-17 17:05:10,581 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 17 states. [2020-07-17 17:05:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:10,822 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-07-17 17:05:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 17:05:10,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 142 [2020-07-17 17:05:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:10,824 INFO L225 Difference]: With dead ends: 116 [2020-07-17 17:05:10,824 INFO L226 Difference]: Without dead ends: 110 [2020-07-17 17:05:10,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-07-17 17:05:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-17 17:05:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-07-17 17:05:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-17 17:05:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-07-17 17:05:10,840 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 142 [2020-07-17 17:05:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:10,840 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-07-17 17:05:10,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 17:05:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-07-17 17:05:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-17 17:05:10,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:10,845 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 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, 1] [2020-07-17 17:05:10,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 17:05:10,845 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1719700669, now seen corresponding path program 13 times [2020-07-17 17:05:10,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:10,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945509106] [2020-07-17 17:05:10,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2020-07-17 17:05:11,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945509106] [2020-07-17 17:05:11,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:11,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-07-17 17:05:11,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561059530] [2020-07-17 17:05:11,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 17:05:11,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 17:05:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:05:11,571 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 18 states. [2020-07-17 17:05:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:11,830 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-07-17 17:05:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 17:05:11,831 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 152 [2020-07-17 17:05:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:11,832 INFO L225 Difference]: With dead ends: 121 [2020-07-17 17:05:11,833 INFO L226 Difference]: Without dead ends: 115 [2020-07-17 17:05:11,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-07-17 17:05:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-17 17:05:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-17 17:05:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-17 17:05:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-07-17 17:05:11,851 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 152 [2020-07-17 17:05:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:11,851 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-07-17 17:05:11,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 17:05:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-07-17 17:05:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-07-17 17:05:11,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:11,854 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 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, 1] [2020-07-17 17:05:11,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 17:05:11,854 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:11,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:11,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1375329431, now seen corresponding path program 14 times [2020-07-17 17:05:11,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:11,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591104082] [2020-07-17 17:05:11,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-07-17 17:05:12,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591104082] [2020-07-17 17:05:12,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:12,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-07-17 17:05:12,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527404460] [2020-07-17 17:05:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 17:05:12,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 17:05:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-07-17 17:05:12,713 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 19 states. [2020-07-17 17:05:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:13,011 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-17 17:05:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 17:05:13,012 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 162 [2020-07-17 17:05:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:13,014 INFO L225 Difference]: With dead ends: 126 [2020-07-17 17:05:13,014 INFO L226 Difference]: Without dead ends: 120 [2020-07-17 17:05:13,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 17:05:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-17 17:05:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-17 17:05:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-17 17:05:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2020-07-17 17:05:13,031 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 162 [2020-07-17 17:05:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:13,034 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2020-07-17 17:05:13,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 17:05:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2020-07-17 17:05:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-17 17:05:13,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:13,035 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 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, 1] [2020-07-17 17:05:13,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 17:05:13,036 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:13,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1446025795, now seen corresponding path program 15 times [2020-07-17 17:05:13,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:13,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350850602] [2020-07-17 17:05:13,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-07-17 17:05:13,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350850602] [2020-07-17 17:05:13,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:13,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-07-17 17:05:13,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206531198] [2020-07-17 17:05:13,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-17 17:05:13,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:13,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-17 17:05:13,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-07-17 17:05:13,888 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand 20 states. [2020-07-17 17:05:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:14,176 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-07-17 17:05:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 17:05:14,177 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 172 [2020-07-17 17:05:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:14,178 INFO L225 Difference]: With dead ends: 131 [2020-07-17 17:05:14,178 INFO L226 Difference]: Without dead ends: 125 [2020-07-17 17:05:14,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 17:05:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-17 17:05:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-07-17 17:05:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-17 17:05:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2020-07-17 17:05:14,191 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 172 [2020-07-17 17:05:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:14,191 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2020-07-17 17:05:14,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-17 17:05:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2020-07-17 17:05:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-17 17:05:14,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:14,194 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 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, 1] [2020-07-17 17:05:14,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 17:05:14,194 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash -435860759, now seen corresponding path program 16 times [2020-07-17 17:05:14,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:14,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653110813] [2020-07-17 17:05:14,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-17 17:05:15,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653110813] [2020-07-17 17:05:15,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:15,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-17 17:05:15,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719655890] [2020-07-17 17:05:15,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 17:05:15,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 17:05:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-07-17 17:05:15,342 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand 21 states. [2020-07-17 17:05:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:15,691 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-17 17:05:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 17:05:15,691 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 182 [2020-07-17 17:05:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:15,693 INFO L225 Difference]: With dead ends: 136 [2020-07-17 17:05:15,693 INFO L226 Difference]: Without dead ends: 130 [2020-07-17 17:05:15,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 17:05:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-17 17:05:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-07-17 17:05:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-17 17:05:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-07-17 17:05:15,708 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 182 [2020-07-17 17:05:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:15,708 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-07-17 17:05:15,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 17:05:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-07-17 17:05:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-07-17 17:05:15,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:15,711 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 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, 1] [2020-07-17 17:05:15,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 17:05:15,711 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 399896899, now seen corresponding path program 17 times [2020-07-17 17:05:15,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:15,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758956412] [2020-07-17 17:05:15,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2020-07-17 17:05:16,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758956412] [2020-07-17 17:05:16,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:16,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-17 17:05:16,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146228167] [2020-07-17 17:05:16,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-17 17:05:16,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:16,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-17 17:05:16,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-07-17 17:05:16,915 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 22 states. [2020-07-17 17:05:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:17,402 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2020-07-17 17:05:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 17:05:17,404 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 192 [2020-07-17 17:05:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:17,406 INFO L225 Difference]: With dead ends: 141 [2020-07-17 17:05:17,406 INFO L226 Difference]: Without dead ends: 135 [2020-07-17 17:05:17,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-07-17 17:05:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-17 17:05:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-07-17 17:05:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-07-17 17:05:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2020-07-17 17:05:17,427 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 192 [2020-07-17 17:05:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:17,428 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2020-07-17 17:05:17,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-17 17:05:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2020-07-17 17:05:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-17 17:05:17,434 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:17,434 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 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, 1] [2020-07-17 17:05:17,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 17:05:17,434 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1566966377, now seen corresponding path program 18 times [2020-07-17 17:05:17,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:17,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021170800] [2020-07-17 17:05:17,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2020-07-17 17:05:18,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021170800] [2020-07-17 17:05:18,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:18,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-17 17:05:18,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875759891] [2020-07-17 17:05:18,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 17:05:18,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 17:05:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-07-17 17:05:18,651 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand 23 states. [2020-07-17 17:05:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:19,011 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2020-07-17 17:05:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 17:05:19,011 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 202 [2020-07-17 17:05:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:19,013 INFO L225 Difference]: With dead ends: 146 [2020-07-17 17:05:19,013 INFO L226 Difference]: Without dead ends: 140 [2020-07-17 17:05:19,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-07-17 17:05:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-17 17:05:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-17 17:05:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-17 17:05:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-07-17 17:05:19,032 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 202 [2020-07-17 17:05:19,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:19,033 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-07-17 17:05:19,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 17:05:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-07-17 17:05:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-17 17:05:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:19,036 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 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, 1] [2020-07-17 17:05:19,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 17:05:19,036 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1494972483, now seen corresponding path program 19 times [2020-07-17 17:05:19,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:19,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095095975] [2020-07-17 17:05:19,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2020-07-17 17:05:20,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095095975] [2020-07-17 17:05:20,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:20,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-07-17 17:05:20,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953503306] [2020-07-17 17:05:20,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-17 17:05:20,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:20,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-17 17:05:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:05:20,358 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 24 states. [2020-07-17 17:05:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:20,704 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-07-17 17:05:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 17:05:20,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 212 [2020-07-17 17:05:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:20,707 INFO L225 Difference]: With dead ends: 151 [2020-07-17 17:05:20,707 INFO L226 Difference]: Without dead ends: 145 [2020-07-17 17:05:20,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-07-17 17:05:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-17 17:05:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-07-17 17:05:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-07-17 17:05:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2020-07-17 17:05:20,721 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 212 [2020-07-17 17:05:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:20,721 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2020-07-17 17:05:20,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-17 17:05:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2020-07-17 17:05:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-07-17 17:05:20,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:20,724 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 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, 1] [2020-07-17 17:05:20,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 17:05:20,725 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1536969193, now seen corresponding path program 20 times [2020-07-17 17:05:20,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:20,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140576716] [2020-07-17 17:05:20,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2000 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2020-07-17 17:05:22,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140576716] [2020-07-17 17:05:22,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:22,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-07-17 17:05:22,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135752252] [2020-07-17 17:05:22,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-17 17:05:22,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:22,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-17 17:05:22,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-07-17 17:05:22,102 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand 25 states. [2020-07-17 17:05:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:22,489 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-07-17 17:05:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-17 17:05:22,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 222 [2020-07-17 17:05:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:22,495 INFO L225 Difference]: With dead ends: 156 [2020-07-17 17:05:22,495 INFO L226 Difference]: Without dead ends: 150 [2020-07-17 17:05:22,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 17:05:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-07-17 17:05:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-07-17 17:05:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-17 17:05:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2020-07-17 17:05:22,511 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 222 [2020-07-17 17:05:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:22,514 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2020-07-17 17:05:22,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-17 17:05:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2020-07-17 17:05:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-07-17 17:05:22,519 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:22,519 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 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, 1] [2020-07-17 17:05:22,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 17:05:22,520 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1985138877, now seen corresponding path program 21 times [2020-07-17 17:05:22,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:22,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522065830] [2020-07-17 17:05:22,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2020-07-17 17:05:23,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522065830] [2020-07-17 17:05:23,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:23,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-07-17 17:05:23,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539127594] [2020-07-17 17:05:23,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-17 17:05:23,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-17 17:05:23,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-07-17 17:05:23,825 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand 26 states. [2020-07-17 17:05:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:24,260 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2020-07-17 17:05:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-17 17:05:24,261 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 232 [2020-07-17 17:05:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:24,263 INFO L225 Difference]: With dead ends: 161 [2020-07-17 17:05:24,263 INFO L226 Difference]: Without dead ends: 155 [2020-07-17 17:05:24,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-07-17 17:05:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-17 17:05:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-07-17 17:05:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-17 17:05:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-07-17 17:05:24,277 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 232 [2020-07-17 17:05:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:24,278 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-07-17 17:05:24,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-17 17:05:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-07-17 17:05:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-17 17:05:24,281 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:24,281 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:24,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-17 17:05:24,282 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1021566615, now seen corresponding path program 22 times [2020-07-17 17:05:24,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:24,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993495575] [2020-07-17 17:05:24,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-07-17 17:05:25,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993495575] [2020-07-17 17:05:25,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:25,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-07-17 17:05:25,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280530445] [2020-07-17 17:05:25,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 17:05:25,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:25,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 17:05:25,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-07-17 17:05:25,630 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 27 states. [2020-07-17 17:05:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:26,081 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2020-07-17 17:05:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-17 17:05:26,082 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 242 [2020-07-17 17:05:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:26,084 INFO L225 Difference]: With dead ends: 166 [2020-07-17 17:05:26,084 INFO L226 Difference]: Without dead ends: 160 [2020-07-17 17:05:26,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-07-17 17:05:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-17 17:05:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-07-17 17:05:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-17 17:05:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2020-07-17 17:05:26,097 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 242 [2020-07-17 17:05:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:26,098 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2020-07-17 17:05:26,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 17:05:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2020-07-17 17:05:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-07-17 17:05:26,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:26,100 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:26,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-17 17:05:26,101 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash -835250621, now seen corresponding path program 23 times [2020-07-17 17:05:26,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:26,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026613162] [2020-07-17 17:05:26,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-07-17 17:05:27,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026613162] [2020-07-17 17:05:27,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:27,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-07-17 17:05:27,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947760126] [2020-07-17 17:05:27,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-17 17:05:27,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:27,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-17 17:05:27,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-07-17 17:05:27,631 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand 28 states. [2020-07-17 17:05:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:28,085 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-07-17 17:05:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-17 17:05:28,086 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 252 [2020-07-17 17:05:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:28,088 INFO L225 Difference]: With dead ends: 171 [2020-07-17 17:05:28,088 INFO L226 Difference]: Without dead ends: 165 [2020-07-17 17:05:28,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-07-17 17:05:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-17 17:05:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-17 17:05:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-17 17:05:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2020-07-17 17:05:28,102 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 252 [2020-07-17 17:05:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:28,103 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2020-07-17 17:05:28,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-17 17:05:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2020-07-17 17:05:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-07-17 17:05:28,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:28,105 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:28,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-17 17:05:28,105 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:28,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1364822249, now seen corresponding path program 24 times [2020-07-17 17:05:28,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:28,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914402704] [2020-07-17 17:05:28,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-07-17 17:05:29,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914402704] [2020-07-17 17:05:29,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:29,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-07-17 17:05:29,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923311069] [2020-07-17 17:05:29,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 17:05:29,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:29,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 17:05:29,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-07-17 17:05:29,760 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 29 states. [2020-07-17 17:05:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:30,265 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2020-07-17 17:05:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-17 17:05:30,265 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 262 [2020-07-17 17:05:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:30,268 INFO L225 Difference]: With dead ends: 176 [2020-07-17 17:05:30,268 INFO L226 Difference]: Without dead ends: 170 [2020-07-17 17:05:30,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2020-07-17 17:05:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-07-17 17:05:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-07-17 17:05:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-17 17:05:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 184 transitions. [2020-07-17 17:05:30,280 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 184 transitions. Word has length 262 [2020-07-17 17:05:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:30,281 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 184 transitions. [2020-07-17 17:05:30,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 17:05:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 184 transitions. [2020-07-17 17:05:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-17 17:05:30,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:30,283 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:30,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-17 17:05:30,283 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:30,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1067111101, now seen corresponding path program 25 times [2020-07-17 17:05:30,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:30,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200373057] [2020-07-17 17:05:30,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-07-17 17:05:32,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200373057] [2020-07-17 17:05:32,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:32,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-07-17 17:05:32,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177712830] [2020-07-17 17:05:32,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-17 17:05:32,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:32,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-17 17:05:32,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-07-17 17:05:32,077 INFO L87 Difference]: Start difference. First operand 170 states and 184 transitions. Second operand 30 states. [2020-07-17 17:05:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:32,595 INFO L93 Difference]: Finished difference Result 181 states and 195 transitions. [2020-07-17 17:05:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-17 17:05:32,595 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 272 [2020-07-17 17:05:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:32,597 INFO L225 Difference]: With dead ends: 181 [2020-07-17 17:05:32,597 INFO L226 Difference]: Without dead ends: 175 [2020-07-17 17:05:32,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2020-07-17 17:05:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-17 17:05:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-07-17 17:05:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-17 17:05:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 189 transitions. [2020-07-17 17:05:32,611 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 189 transitions. Word has length 272 [2020-07-17 17:05:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:32,612 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 189 transitions. [2020-07-17 17:05:32,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-17 17:05:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 189 transitions. [2020-07-17 17:05:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-07-17 17:05:32,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:32,614 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:32,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-17 17:05:32,614 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash -557285271, now seen corresponding path program 26 times [2020-07-17 17:05:32,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:32,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880988214] [2020-07-17 17:05:32,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2020-07-17 17:05:34,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880988214] [2020-07-17 17:05:34,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:34,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-07-17 17:05:34,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336376961] [2020-07-17 17:05:34,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 17:05:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 17:05:34,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-07-17 17:05:34,527 INFO L87 Difference]: Start difference. First operand 175 states and 189 transitions. Second operand 31 states. [2020-07-17 17:05:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:35,064 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-07-17 17:05:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-17 17:05:35,064 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 282 [2020-07-17 17:05:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:35,066 INFO L225 Difference]: With dead ends: 186 [2020-07-17 17:05:35,066 INFO L226 Difference]: Without dead ends: 180 [2020-07-17 17:05:35,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-07-17 17:05:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-07-17 17:05:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-07-17 17:05:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-07-17 17:05:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2020-07-17 17:05:35,081 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 282 [2020-07-17 17:05:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:35,081 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2020-07-17 17:05:35,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 17:05:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2020-07-17 17:05:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-07-17 17:05:35,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:35,084 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:35,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-17 17:05:35,084 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 786658371, now seen corresponding path program 27 times [2020-07-17 17:05:35,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:35,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785746789] [2020-07-17 17:05:35,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3645 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2020-07-17 17:05:37,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785746789] [2020-07-17 17:05:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-07-17 17:05:37,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95245544] [2020-07-17 17:05:37,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-17 17:05:37,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:37,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-17 17:05:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-07-17 17:05:37,060 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand 32 states. [2020-07-17 17:05:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:37,609 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-07-17 17:05:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-17 17:05:37,609 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 292 [2020-07-17 17:05:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:37,613 INFO L225 Difference]: With dead ends: 191 [2020-07-17 17:05:37,613 INFO L226 Difference]: Without dead ends: 185 [2020-07-17 17:05:37,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2020-07-17 17:05:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-17 17:05:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-07-17 17:05:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-17 17:05:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2020-07-17 17:05:37,631 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 292 [2020-07-17 17:05:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:37,631 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 199 transitions. [2020-07-17 17:05:37,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-17 17:05:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 199 transitions. [2020-07-17 17:05:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-07-17 17:05:37,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:37,634 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:37,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-17 17:05:37,634 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1629681687, now seen corresponding path program 28 times [2020-07-17 17:05:37,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:37,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016341132] [2020-07-17 17:05:37,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2020-07-17 17:05:39,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016341132] [2020-07-17 17:05:39,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:39,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-07-17 17:05:39,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235472306] [2020-07-17 17:05:39,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-17 17:05:39,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-17 17:05:39,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 17:05:39,581 INFO L87 Difference]: Start difference. First operand 185 states and 199 transitions. Second operand 33 states. [2020-07-17 17:05:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:40,186 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2020-07-17 17:05:40,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-17 17:05:40,186 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 302 [2020-07-17 17:05:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:40,189 INFO L225 Difference]: With dead ends: 196 [2020-07-17 17:05:40,189 INFO L226 Difference]: Without dead ends: 190 [2020-07-17 17:05:40,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2020-07-17 17:05:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-17 17:05:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-07-17 17:05:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-17 17:05:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2020-07-17 17:05:40,201 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 302 [2020-07-17 17:05:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:40,202 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2020-07-17 17:05:40,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-17 17:05:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2020-07-17 17:05:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-07-17 17:05:40,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:40,204 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:40,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-17 17:05:40,204 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash -581047485, now seen corresponding path program 29 times [2020-07-17 17:05:40,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:40,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030103218] [2020-07-17 17:05:40,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4205 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2020-07-17 17:05:42,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030103218] [2020-07-17 17:05:42,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:42,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-07-17 17:05:42,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477596471] [2020-07-17 17:05:42,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-17 17:05:42,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:42,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-17 17:05:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 17:05:42,567 INFO L87 Difference]: Start difference. First operand 190 states and 204 transitions. Second operand 34 states. [2020-07-17 17:05:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:43,160 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2020-07-17 17:05:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-17 17:05:43,160 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 312 [2020-07-17 17:05:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:43,163 INFO L225 Difference]: With dead ends: 201 [2020-07-17 17:05:43,163 INFO L226 Difference]: Without dead ends: 195 [2020-07-17 17:05:43,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2020-07-17 17:05:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-17 17:05:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-07-17 17:05:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-17 17:05:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-07-17 17:05:43,177 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 312 [2020-07-17 17:05:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:43,178 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-07-17 17:05:43,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-17 17:05:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-07-17 17:05:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-17 17:05:43,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:43,180 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:43,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-17 17:05:43,181 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1611341673, now seen corresponding path program 30 times [2020-07-17 17:05:43,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:43,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240925583] [2020-07-17 17:05:43,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4500 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2020-07-17 17:05:45,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240925583] [2020-07-17 17:05:45,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:45,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-07-17 17:05:45,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058469527] [2020-07-17 17:05:45,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-17 17:05:45,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:45,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-17 17:05:45,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 17:05:45,503 INFO L87 Difference]: Start difference. First operand 195 states and 209 transitions. Second operand 35 states. [2020-07-17 17:05:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:46,134 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2020-07-17 17:05:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-17 17:05:46,135 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 322 [2020-07-17 17:05:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:46,137 INFO L225 Difference]: With dead ends: 206 [2020-07-17 17:05:46,137 INFO L226 Difference]: Without dead ends: 200 [2020-07-17 17:05:46,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2020-07-17 17:05:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-17 17:05:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-07-17 17:05:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-17 17:05:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 214 transitions. [2020-07-17 17:05:46,153 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 214 transitions. Word has length 322 [2020-07-17 17:05:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:46,154 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 214 transitions. [2020-07-17 17:05:46,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-17 17:05:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 214 transitions. [2020-07-17 17:05:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-17 17:05:46,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:46,156 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:46,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-07-17 17:05:46,157 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:46,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:46,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1149276739, now seen corresponding path program 31 times [2020-07-17 17:05:46,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:46,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574458294] [2020-07-17 17:05:46,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4805 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2020-07-17 17:05:48,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574458294] [2020-07-17 17:05:48,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:48,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-07-17 17:05:48,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473983275] [2020-07-17 17:05:48,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-17 17:05:48,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:48,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-17 17:05:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 17:05:48,835 INFO L87 Difference]: Start difference. First operand 200 states and 214 transitions. Second operand 36 states. [2020-07-17 17:05:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:49,545 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2020-07-17 17:05:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-17 17:05:49,546 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 332 [2020-07-17 17:05:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:49,549 INFO L225 Difference]: With dead ends: 211 [2020-07-17 17:05:49,549 INFO L226 Difference]: Without dead ends: 205 [2020-07-17 17:05:49,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2020-07-17 17:05:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-17 17:05:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-07-17 17:05:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-17 17:05:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2020-07-17 17:05:49,561 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 332 [2020-07-17 17:05:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:49,561 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2020-07-17 17:05:49,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-17 17:05:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2020-07-17 17:05:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-17 17:05:49,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:49,564 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:49,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-07-17 17:05:49,564 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash -876165399, now seen corresponding path program 32 times [2020-07-17 17:05:49,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:49,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304682259] [2020-07-17 17:05:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5120 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2020-07-17 17:05:52,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304682259] [2020-07-17 17:05:52,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:52,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-07-17 17:05:52,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756806493] [2020-07-17 17:05:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-17 17:05:52,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-17 17:05:52,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-07-17 17:05:52,331 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand 37 states. [2020-07-17 17:05:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:53,019 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2020-07-17 17:05:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-17 17:05:53,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 342 [2020-07-17 17:05:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:53,022 INFO L225 Difference]: With dead ends: 216 [2020-07-17 17:05:53,022 INFO L226 Difference]: Without dead ends: 210 [2020-07-17 17:05:53,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2020-07-17 17:05:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-17 17:05:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-07-17 17:05:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-07-17 17:05:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2020-07-17 17:05:53,036 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 342 [2020-07-17 17:05:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:53,037 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2020-07-17 17:05:53,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-17 17:05:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2020-07-17 17:05:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-07-17 17:05:53,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:53,039 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:53,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-07-17 17:05:53,040 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1375168835, now seen corresponding path program 33 times [2020-07-17 17:05:53,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:53,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761599193] [2020-07-17 17:05:53,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5445 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-07-17 17:05:56,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761599193] [2020-07-17 17:05:56,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:56,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-07-17 17:05:56,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843103309] [2020-07-17 17:05:56,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-17 17:05:56,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-17 17:05:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 17:05:56,089 INFO L87 Difference]: Start difference. First operand 210 states and 224 transitions. Second operand 38 states. [2020-07-17 17:05:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:05:56,817 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2020-07-17 17:05:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-17 17:05:56,817 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 352 [2020-07-17 17:05:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:05:56,819 INFO L225 Difference]: With dead ends: 221 [2020-07-17 17:05:56,820 INFO L226 Difference]: Without dead ends: 215 [2020-07-17 17:05:56,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2020-07-17 17:05:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-07-17 17:05:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-07-17 17:05:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-17 17:05:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 229 transitions. [2020-07-17 17:05:56,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 229 transitions. Word has length 352 [2020-07-17 17:05:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:05:56,834 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 229 transitions. [2020-07-17 17:05:56,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-17 17:05:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 229 transitions. [2020-07-17 17:05:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-17 17:05:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:05:56,837 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:05:56,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-07-17 17:05:56,837 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:05:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:05:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1501299095, now seen corresponding path program 34 times [2020-07-17 17:05:56,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:05:56,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090034427] [2020-07-17 17:05:56,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:05:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:05:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5780 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2020-07-17 17:05:59,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090034427] [2020-07-17 17:05:59,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:05:59,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-07-17 17:05:59,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049836942] [2020-07-17 17:05:59,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-17 17:05:59,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:05:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-17 17:05:59,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 17:05:59,942 INFO L87 Difference]: Start difference. First operand 215 states and 229 transitions. Second operand 39 states. [2020-07-17 17:06:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:00,701 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2020-07-17 17:06:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-17 17:06:00,701 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2020-07-17 17:06:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:00,703 INFO L225 Difference]: With dead ends: 226 [2020-07-17 17:06:00,704 INFO L226 Difference]: Without dead ends: 220 [2020-07-17 17:06:00,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2020-07-17 17:06:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-17 17:06:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-07-17 17:06:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-07-17 17:06:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 234 transitions. [2020-07-17 17:06:00,717 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 234 transitions. Word has length 362 [2020-07-17 17:06:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:00,717 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 234 transitions. [2020-07-17 17:06:00,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-17 17:06:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 234 transitions. [2020-07-17 17:06:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-07-17 17:06:00,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:00,720 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:00,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-07-17 17:06:00,720 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash 678326339, now seen corresponding path program 35 times [2020-07-17 17:06:00,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:00,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561193752] [2020-07-17 17:06:00,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2020-07-17 17:06:03,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561193752] [2020-07-17 17:06:03,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:03,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-07-17 17:06:03,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017508085] [2020-07-17 17:06:03,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-17 17:06:03,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:03,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-17 17:06:03,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-07-17 17:06:03,769 INFO L87 Difference]: Start difference. First operand 220 states and 234 transitions. Second operand 40 states. [2020-07-17 17:06:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:04,566 INFO L93 Difference]: Finished difference Result 231 states and 245 transitions. [2020-07-17 17:06:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-17 17:06:04,567 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 372 [2020-07-17 17:06:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:04,568 INFO L225 Difference]: With dead ends: 231 [2020-07-17 17:06:04,568 INFO L226 Difference]: Without dead ends: 225 [2020-07-17 17:06:04,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2020-07-17 17:06:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-17 17:06:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-07-17 17:06:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-07-17 17:06:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-07-17 17:06:04,584 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 372 [2020-07-17 17:06:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:04,585 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-07-17 17:06:04,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-17 17:06:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-07-17 17:06:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-07-17 17:06:04,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:04,589 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:04,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-07-17 17:06:04,590 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 263636457, now seen corresponding path program 36 times [2020-07-17 17:06:04,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:04,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369176995] [2020-07-17 17:06:04,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 3258 trivial. 0 not checked. [2020-07-17 17:06:08,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369176995] [2020-07-17 17:06:08,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:08,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-07-17 17:06:08,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185045501] [2020-07-17 17:06:08,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-17 17:06:08,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-17 17:06:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=895, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 17:06:08,046 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 41 states. [2020-07-17 17:06:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:08,836 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2020-07-17 17:06:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-17 17:06:08,836 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 382 [2020-07-17 17:06:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:08,838 INFO L225 Difference]: With dead ends: 236 [2020-07-17 17:06:08,838 INFO L226 Difference]: Without dead ends: 230 [2020-07-17 17:06:08,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2225, Invalid=3781, Unknown=0, NotChecked=0, Total=6006 [2020-07-17 17:06:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-17 17:06:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-07-17 17:06:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-17 17:06:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2020-07-17 17:06:08,859 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 382 [2020-07-17 17:06:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:08,860 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2020-07-17 17:06:08,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-17 17:06:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2020-07-17 17:06:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-07-17 17:06:08,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:08,863 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:08,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-07-17 17:06:08,863 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:08,864 INFO L82 PathProgramCache]: Analyzing trace with hash -544102589, now seen corresponding path program 37 times [2020-07-17 17:06:08,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:08,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59557177] [2020-07-17 17:06:08,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 3441 trivial. 0 not checked. [2020-07-17 17:06:12,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59557177] [2020-07-17 17:06:12,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:12,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-07-17 17:06:12,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267970022] [2020-07-17 17:06:12,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-17 17:06:12,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-17 17:06:12,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=938, Unknown=0, NotChecked=0, Total=1722 [2020-07-17 17:06:12,743 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 42 states. [2020-07-17 17:06:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:13,585 INFO L93 Difference]: Finished difference Result 241 states and 255 transitions. [2020-07-17 17:06:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-17 17:06:13,585 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 392 [2020-07-17 17:06:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:13,587 INFO L225 Difference]: With dead ends: 241 [2020-07-17 17:06:13,587 INFO L226 Difference]: Without dead ends: 235 [2020-07-17 17:06:13,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2342, Invalid=3978, Unknown=0, NotChecked=0, Total=6320 [2020-07-17 17:06:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-17 17:06:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-07-17 17:06:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-07-17 17:06:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 249 transitions. [2020-07-17 17:06:13,600 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 249 transitions. Word has length 392 [2020-07-17 17:06:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:13,601 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 249 transitions. [2020-07-17 17:06:13,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-17 17:06:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 249 transitions. [2020-07-17 17:06:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-07-17 17:06:13,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:13,604 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:13,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-07-17 17:06:13,605 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:13,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:13,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1043128983, now seen corresponding path program 38 times [2020-07-17 17:06:13,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:13,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741940614] [2020-07-17 17:06:13,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7220 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 3629 trivial. 0 not checked. [2020-07-17 17:06:17,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741940614] [2020-07-17 17:06:17,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:17,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-07-17 17:06:17,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24495628] [2020-07-17 17:06:17,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-17 17:06:17,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-17 17:06:17,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=982, Unknown=0, NotChecked=0, Total=1806 [2020-07-17 17:06:17,465 INFO L87 Difference]: Start difference. First operand 235 states and 249 transitions. Second operand 43 states. [2020-07-17 17:06:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:18,336 INFO L93 Difference]: Finished difference Result 246 states and 260 transitions. [2020-07-17 17:06:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-17 17:06:18,336 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 402 [2020-07-17 17:06:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:18,338 INFO L225 Difference]: With dead ends: 246 [2020-07-17 17:06:18,338 INFO L226 Difference]: Without dead ends: 240 [2020-07-17 17:06:18,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2462, Invalid=4180, Unknown=0, NotChecked=0, Total=6642 [2020-07-17 17:06:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-17 17:06:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-07-17 17:06:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-17 17:06:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 254 transitions. [2020-07-17 17:06:18,352 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 254 transitions. Word has length 402 [2020-07-17 17:06:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:18,353 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 254 transitions. [2020-07-17 17:06:18,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-17 17:06:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 254 transitions. [2020-07-17 17:06:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-17 17:06:18,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:18,356 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:18,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-07-17 17:06:18,356 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:18,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1141706307, now seen corresponding path program 39 times [2020-07-17 17:06:18,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:18,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831780904] [2020-07-17 17:06:18,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7605 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2020-07-17 17:06:22,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831780904] [2020-07-17 17:06:22,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:22,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-07-17 17:06:22,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529117623] [2020-07-17 17:06:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-17 17:06:22,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-17 17:06:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=1027, Unknown=0, NotChecked=0, Total=1892 [2020-07-17 17:06:22,344 INFO L87 Difference]: Start difference. First operand 240 states and 254 transitions. Second operand 44 states. [2020-07-17 17:06:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:23,242 INFO L93 Difference]: Finished difference Result 251 states and 265 transitions. [2020-07-17 17:06:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-17 17:06:23,242 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 412 [2020-07-17 17:06:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:23,245 INFO L225 Difference]: With dead ends: 251 [2020-07-17 17:06:23,245 INFO L226 Difference]: Without dead ends: 245 [2020-07-17 17:06:23,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2585, Invalid=4387, Unknown=0, NotChecked=0, Total=6972 [2020-07-17 17:06:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-07-17 17:06:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2020-07-17 17:06:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-17 17:06:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 259 transitions. [2020-07-17 17:06:23,258 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 259 transitions. Word has length 412 [2020-07-17 17:06:23,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:23,259 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 259 transitions. [2020-07-17 17:06:23,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-17 17:06:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 259 transitions. [2020-07-17 17:06:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-17 17:06:23,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:23,262 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:23,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-07-17 17:06:23,262 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1380779241, now seen corresponding path program 40 times [2020-07-17 17:06:23,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:23,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280672753] [2020-07-17 17:06:23,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8000 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 4020 trivial. 0 not checked. [2020-07-17 17:06:27,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280672753] [2020-07-17 17:06:27,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:27,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-07-17 17:06:27,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040483431] [2020-07-17 17:06:27,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-17 17:06:27,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-17 17:06:27,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 17:06:27,365 INFO L87 Difference]: Start difference. First operand 245 states and 259 transitions. Second operand 45 states. [2020-07-17 17:06:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:28,315 INFO L93 Difference]: Finished difference Result 256 states and 270 transitions. [2020-07-17 17:06:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-17 17:06:28,315 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 422 [2020-07-17 17:06:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:28,317 INFO L225 Difference]: With dead ends: 256 [2020-07-17 17:06:28,317 INFO L226 Difference]: Without dead ends: 250 [2020-07-17 17:06:28,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2711, Invalid=4599, Unknown=0, NotChecked=0, Total=7310 [2020-07-17 17:06:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-17 17:06:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-07-17 17:06:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-07-17 17:06:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 264 transitions. [2020-07-17 17:06:28,329 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 264 transitions. Word has length 422 [2020-07-17 17:06:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:28,330 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 264 transitions. [2020-07-17 17:06:28,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-17 17:06:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 264 transitions. [2020-07-17 17:06:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-07-17 17:06:28,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:28,333 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:28,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-07-17 17:06:28,334 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:28,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1752390333, now seen corresponding path program 41 times [2020-07-17 17:06:28,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:28,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278561340] [2020-07-17 17:06:28,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8405 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 4223 trivial. 0 not checked. [2020-07-17 17:06:32,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278561340] [2020-07-17 17:06:32,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:32,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-07-17 17:06:32,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543893315] [2020-07-17 17:06:32,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-17 17:06:32,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:32,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-17 17:06:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=1120, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 17:06:32,814 INFO L87 Difference]: Start difference. First operand 250 states and 264 transitions. Second operand 46 states. [2020-07-17 17:06:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:33,823 INFO L93 Difference]: Finished difference Result 261 states and 275 transitions. [2020-07-17 17:06:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-17 17:06:33,823 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 432 [2020-07-17 17:06:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:33,825 INFO L225 Difference]: With dead ends: 261 [2020-07-17 17:06:33,826 INFO L226 Difference]: Without dead ends: 255 [2020-07-17 17:06:33,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2840, Invalid=4816, Unknown=0, NotChecked=0, Total=7656 [2020-07-17 17:06:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-07-17 17:06:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2020-07-17 17:06:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-07-17 17:06:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 269 transitions. [2020-07-17 17:06:33,840 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 269 transitions. Word has length 432 [2020-07-17 17:06:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:33,840 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 269 transitions. [2020-07-17 17:06:33,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-17 17:06:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 269 transitions. [2020-07-17 17:06:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-07-17 17:06:33,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:33,844 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:33,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-07-17 17:06:33,844 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1905818729, now seen corresponding path program 42 times [2020-07-17 17:06:33,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:33,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327277423] [2020-07-17 17:06:33,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 4431 trivial. 0 not checked. [2020-07-17 17:06:38,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327277423] [2020-07-17 17:06:38,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:38,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-07-17 17:06:38,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237943899] [2020-07-17 17:06:38,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-17 17:06:38,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-17 17:06:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=994, Invalid=1168, Unknown=0, NotChecked=0, Total=2162 [2020-07-17 17:06:38,503 INFO L87 Difference]: Start difference. First operand 255 states and 269 transitions. Second operand 47 states. [2020-07-17 17:06:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:39,513 INFO L93 Difference]: Finished difference Result 266 states and 280 transitions. [2020-07-17 17:06:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-17 17:06:39,513 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 442 [2020-07-17 17:06:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:39,515 INFO L225 Difference]: With dead ends: 266 [2020-07-17 17:06:39,515 INFO L226 Difference]: Without dead ends: 260 [2020-07-17 17:06:39,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2972, Invalid=5038, Unknown=0, NotChecked=0, Total=8010 [2020-07-17 17:06:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-07-17 17:06:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2020-07-17 17:06:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-17 17:06:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 274 transitions. [2020-07-17 17:06:39,530 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 274 transitions. Word has length 442 [2020-07-17 17:06:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:39,531 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 274 transitions. [2020-07-17 17:06:39,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-17 17:06:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 274 transitions. [2020-07-17 17:06:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-07-17 17:06:39,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:39,535 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:39,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-07-17 17:06:39,535 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1354525763, now seen corresponding path program 43 times [2020-07-17 17:06:39,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:39,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306395998] [2020-07-17 17:06:39,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9245 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 4644 trivial. 0 not checked. [2020-07-17 17:06:44,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306395998] [2020-07-17 17:06:44,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:44,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-07-17 17:06:44,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890538316] [2020-07-17 17:06:44,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-17 17:06:44,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:44,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-17 17:06:44,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=1217, Unknown=0, NotChecked=0, Total=2256 [2020-07-17 17:06:44,507 INFO L87 Difference]: Start difference. First operand 260 states and 274 transitions. Second operand 48 states. [2020-07-17 17:06:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:45,565 INFO L93 Difference]: Finished difference Result 271 states and 285 transitions. [2020-07-17 17:06:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-17 17:06:45,565 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 452 [2020-07-17 17:06:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:45,568 INFO L225 Difference]: With dead ends: 271 [2020-07-17 17:06:45,568 INFO L226 Difference]: Without dead ends: 265 [2020-07-17 17:06:45,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3107, Invalid=5265, Unknown=0, NotChecked=0, Total=8372 [2020-07-17 17:06:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-17 17:06:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-07-17 17:06:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-07-17 17:06:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 279 transitions. [2020-07-17 17:06:45,583 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 279 transitions. Word has length 452 [2020-07-17 17:06:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:45,583 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 279 transitions. [2020-07-17 17:06:45,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-17 17:06:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 279 transitions. [2020-07-17 17:06:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-07-17 17:06:45,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:45,586 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:45,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-07-17 17:06:45,587 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 724141033, now seen corresponding path program 44 times [2020-07-17 17:06:45,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:45,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271312175] [2020-07-17 17:06:45,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9680 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 4862 trivial. 0 not checked. [2020-07-17 17:06:50,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271312175] [2020-07-17 17:06:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:50,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-07-17 17:06:50,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702018791] [2020-07-17 17:06:50,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-17 17:06:50,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-17 17:06:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=1267, Unknown=0, NotChecked=0, Total=2352 [2020-07-17 17:06:50,812 INFO L87 Difference]: Start difference. First operand 265 states and 279 transitions. Second operand 49 states. [2020-07-17 17:06:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:51,916 INFO L93 Difference]: Finished difference Result 276 states and 290 transitions. [2020-07-17 17:06:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-17 17:06:51,916 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 462 [2020-07-17 17:06:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:51,919 INFO L225 Difference]: With dead ends: 276 [2020-07-17 17:06:51,919 INFO L226 Difference]: Without dead ends: 270 [2020-07-17 17:06:51,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3245, Invalid=5497, Unknown=0, NotChecked=0, Total=8742 [2020-07-17 17:06:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-07-17 17:06:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-07-17 17:06:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-17 17:06:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 284 transitions. [2020-07-17 17:06:51,934 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 284 transitions. Word has length 462 [2020-07-17 17:06:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:51,935 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 284 transitions. [2020-07-17 17:06:51,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-17 17:06:51,935 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 284 transitions. [2020-07-17 17:06:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-07-17 17:06:51,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:51,939 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:51,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-07-17 17:06:51,939 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash -616012989, now seen corresponding path program 45 times [2020-07-17 17:06:51,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:51,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646561109] [2020-07-17 17:06:51,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10125 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2020-07-17 17:06:57,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646561109] [2020-07-17 17:06:57,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:06:57,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-07-17 17:06:57,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311340132] [2020-07-17 17:06:57,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-17 17:06:57,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:06:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-17 17:06:57,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=1318, Unknown=0, NotChecked=0, Total=2450 [2020-07-17 17:06:57,427 INFO L87 Difference]: Start difference. First operand 270 states and 284 transitions. Second operand 50 states. [2020-07-17 17:06:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:06:58,559 INFO L93 Difference]: Finished difference Result 281 states and 295 transitions. [2020-07-17 17:06:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-17 17:06:58,559 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 472 [2020-07-17 17:06:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:06:58,562 INFO L225 Difference]: With dead ends: 281 [2020-07-17 17:06:58,562 INFO L226 Difference]: Without dead ends: 275 [2020-07-17 17:06:58,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3386, Invalid=5734, Unknown=0, NotChecked=0, Total=9120 [2020-07-17 17:06:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-07-17 17:06:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-07-17 17:06:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-17 17:06:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 289 transitions. [2020-07-17 17:06:58,577 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 289 transitions. Word has length 472 [2020-07-17 17:06:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:06:58,578 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 289 transitions. [2020-07-17 17:06:58,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-17 17:06:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 289 transitions. [2020-07-17 17:06:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-07-17 17:06:58,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:06:58,581 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:06:58,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-07-17 17:06:58,581 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:06:58,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:06:58,582 INFO L82 PathProgramCache]: Analyzing trace with hash 628366185, now seen corresponding path program 46 times [2020-07-17 17:06:58,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:06:58,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980106028] [2020-07-17 17:06:58,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:06:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:06:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10580 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 5313 trivial. 0 not checked. [2020-07-17 17:07:04,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980106028] [2020-07-17 17:07:04,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:04,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-07-17 17:07:04,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543712647] [2020-07-17 17:07:04,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-17 17:07:04,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:04,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-17 17:07:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2020-07-17 17:07:04,343 INFO L87 Difference]: Start difference. First operand 275 states and 289 transitions. Second operand 51 states. [2020-07-17 17:07:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:05,539 INFO L93 Difference]: Finished difference Result 286 states and 300 transitions. [2020-07-17 17:07:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-17 17:07:05,540 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 482 [2020-07-17 17:07:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:05,542 INFO L225 Difference]: With dead ends: 286 [2020-07-17 17:07:05,543 INFO L226 Difference]: Without dead ends: 280 [2020-07-17 17:07:05,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3530, Invalid=5976, Unknown=0, NotChecked=0, Total=9506 [2020-07-17 17:07:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-17 17:07:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2020-07-17 17:07:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-17 17:07:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 294 transitions. [2020-07-17 17:07:05,558 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 294 transitions. Word has length 482 [2020-07-17 17:07:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:05,558 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 294 transitions. [2020-07-17 17:07:05,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-17 17:07:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 294 transitions. [2020-07-17 17:07:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-07-17 17:07:05,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:05,562 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:05,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-07-17 17:07:05,562 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1474071107, now seen corresponding path program 47 times [2020-07-17 17:07:05,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:05,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441107725] [2020-07-17 17:07:05,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 5546 trivial. 0 not checked. [2020-07-17 17:07:12,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441107725] [2020-07-17 17:07:12,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:12,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-07-17 17:07:12,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835176180] [2020-07-17 17:07:12,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-17 17:07:12,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:12,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-17 17:07:12,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=1423, Unknown=0, NotChecked=0, Total=2652 [2020-07-17 17:07:12,459 INFO L87 Difference]: Start difference. First operand 280 states and 294 transitions. Second operand 52 states. [2020-07-17 17:07:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:13,689 INFO L93 Difference]: Finished difference Result 291 states and 305 transitions. [2020-07-17 17:07:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-17 17:07:13,690 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 492 [2020-07-17 17:07:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:13,692 INFO L225 Difference]: With dead ends: 291 [2020-07-17 17:07:13,692 INFO L226 Difference]: Without dead ends: 285 [2020-07-17 17:07:13,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3677, Invalid=6223, Unknown=0, NotChecked=0, Total=9900 [2020-07-17 17:07:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-07-17 17:07:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2020-07-17 17:07:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-07-17 17:07:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 299 transitions. [2020-07-17 17:07:13,708 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 299 transitions. Word has length 492 [2020-07-17 17:07:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:13,709 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 299 transitions. [2020-07-17 17:07:13,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-17 17:07:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 299 transitions. [2020-07-17 17:07:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-07-17 17:07:13,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:13,713 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:13,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-07-17 17:07:13,713 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash -504610071, now seen corresponding path program 48 times [2020-07-17 17:07:13,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:13,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59767975] [2020-07-17 17:07:13,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11520 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 5784 trivial. 0 not checked. [2020-07-17 17:07:20,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59767975] [2020-07-17 17:07:20,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:20,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-07-17 17:07:20,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858820737] [2020-07-17 17:07:20,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-17 17:07:20,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:20,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-17 17:07:20,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=1477, Unknown=0, NotChecked=0, Total=2756 [2020-07-17 17:07:20,216 INFO L87 Difference]: Start difference. First operand 285 states and 299 transitions. Second operand 53 states. [2020-07-17 17:07:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:21,499 INFO L93 Difference]: Finished difference Result 296 states and 310 transitions. [2020-07-17 17:07:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-17 17:07:21,500 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 502 [2020-07-17 17:07:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:21,502 INFO L225 Difference]: With dead ends: 296 [2020-07-17 17:07:21,502 INFO L226 Difference]: Without dead ends: 290 [2020-07-17 17:07:21,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3827, Invalid=6475, Unknown=0, NotChecked=0, Total=10302 [2020-07-17 17:07:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-07-17 17:07:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2020-07-17 17:07:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-07-17 17:07:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 304 transitions. [2020-07-17 17:07:21,517 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 304 transitions. Word has length 502 [2020-07-17 17:07:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:21,518 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 304 transitions. [2020-07-17 17:07:21,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-17 17:07:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 304 transitions. [2020-07-17 17:07:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-07-17 17:07:21,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:21,522 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:21,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-07-17 17:07:21,522 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1545920835, now seen corresponding path program 49 times [2020-07-17 17:07:21,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:21,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801683631] [2020-07-17 17:07:21,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12005 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 6027 trivial. 0 not checked. [2020-07-17 17:07:28,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801683631] [2020-07-17 17:07:28,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:28,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-07-17 17:07:28,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760851334] [2020-07-17 17:07:28,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-17 17:07:28,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:28,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-17 17:07:28,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2020-07-17 17:07:28,409 INFO L87 Difference]: Start difference. First operand 290 states and 304 transitions. Second operand 54 states. [2020-07-17 17:07:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:29,714 INFO L93 Difference]: Finished difference Result 301 states and 315 transitions. [2020-07-17 17:07:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-17 17:07:29,714 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 512 [2020-07-17 17:07:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:29,717 INFO L225 Difference]: With dead ends: 301 [2020-07-17 17:07:29,717 INFO L226 Difference]: Without dead ends: 295 [2020-07-17 17:07:29,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3980, Invalid=6732, Unknown=0, NotChecked=0, Total=10712 [2020-07-17 17:07:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-17 17:07:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2020-07-17 17:07:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-07-17 17:07:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 309 transitions. [2020-07-17 17:07:29,732 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 309 transitions. Word has length 512 [2020-07-17 17:07:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:29,733 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 309 transitions. [2020-07-17 17:07:29,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-17 17:07:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 309 transitions. [2020-07-17 17:07:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-07-17 17:07:29,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:29,737 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:29,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-07-17 17:07:29,737 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash -49939863, now seen corresponding path program 50 times [2020-07-17 17:07:29,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:29,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745055684] [2020-07-17 17:07:29,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12500 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 6275 trivial. 0 not checked. [2020-07-17 17:07:37,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745055684] [2020-07-17 17:07:37,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:37,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-07-17 17:07:37,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160454121] [2020-07-17 17:07:37,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-17 17:07:37,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:37,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-17 17:07:37,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1588, Unknown=0, NotChecked=0, Total=2970 [2020-07-17 17:07:37,128 INFO L87 Difference]: Start difference. First operand 295 states and 309 transitions. Second operand 55 states. [2020-07-17 17:07:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:38,468 INFO L93 Difference]: Finished difference Result 306 states and 320 transitions. [2020-07-17 17:07:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-17 17:07:38,469 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 522 [2020-07-17 17:07:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:38,471 INFO L225 Difference]: With dead ends: 306 [2020-07-17 17:07:38,471 INFO L226 Difference]: Without dead ends: 300 [2020-07-17 17:07:38,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4136, Invalid=6994, Unknown=0, NotChecked=0, Total=11130 [2020-07-17 17:07:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-07-17 17:07:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2020-07-17 17:07:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-07-17 17:07:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 314 transitions. [2020-07-17 17:07:38,484 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 314 transitions. Word has length 522 [2020-07-17 17:07:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:38,485 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 314 transitions. [2020-07-17 17:07:38,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-17 17:07:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 314 transitions. [2020-07-17 17:07:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-07-17 17:07:38,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:38,489 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:38,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-07-17 17:07:38,489 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1295161277, now seen corresponding path program 51 times [2020-07-17 17:07:38,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:38,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717682651] [2020-07-17 17:07:38,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13005 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 6528 trivial. 0 not checked. [2020-07-17 17:07:46,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717682651] [2020-07-17 17:07:46,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:46,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-07-17 17:07:46,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768784982] [2020-07-17 17:07:46,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-17 17:07:46,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:46,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-17 17:07:46,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=1645, Unknown=0, NotChecked=0, Total=3080 [2020-07-17 17:07:46,153 INFO L87 Difference]: Start difference. First operand 300 states and 314 transitions. Second operand 56 states. [2020-07-17 17:07:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:47,559 INFO L93 Difference]: Finished difference Result 311 states and 325 transitions. [2020-07-17 17:07:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-17 17:07:47,559 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 532 [2020-07-17 17:07:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:47,562 INFO L225 Difference]: With dead ends: 311 [2020-07-17 17:07:47,562 INFO L226 Difference]: Without dead ends: 305 [2020-07-17 17:07:47,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4295, Invalid=7261, Unknown=0, NotChecked=0, Total=11556 [2020-07-17 17:07:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-07-17 17:07:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2020-07-17 17:07:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-07-17 17:07:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 319 transitions. [2020-07-17 17:07:47,577 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 319 transitions. Word has length 532 [2020-07-17 17:07:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:47,578 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 319 transitions. [2020-07-17 17:07:47,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-17 17:07:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 319 transitions. [2020-07-17 17:07:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-07-17 17:07:47,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:47,582 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:47,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-07-17 17:07:47,582 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1848984041, now seen corresponding path program 52 times [2020-07-17 17:07:47,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:47,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832329028] [2020-07-17 17:07:47,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13520 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2020-07-17 17:07:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832329028] [2020-07-17 17:07:55,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:07:55,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-07-17 17:07:55,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196511408] [2020-07-17 17:07:55,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-17 17:07:55,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:07:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-17 17:07:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=1703, Unknown=0, NotChecked=0, Total=3192 [2020-07-17 17:07:55,721 INFO L87 Difference]: Start difference. First operand 305 states and 319 transitions. Second operand 57 states. [2020-07-17 17:07:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:07:57,162 INFO L93 Difference]: Finished difference Result 316 states and 330 transitions. [2020-07-17 17:07:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-17 17:07:57,162 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 542 [2020-07-17 17:07:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:07:57,164 INFO L225 Difference]: With dead ends: 316 [2020-07-17 17:07:57,164 INFO L226 Difference]: Without dead ends: 310 [2020-07-17 17:07:57,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4457, Invalid=7533, Unknown=0, NotChecked=0, Total=11990 [2020-07-17 17:07:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-17 17:07:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2020-07-17 17:07:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-07-17 17:07:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 324 transitions. [2020-07-17 17:07:57,180 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 324 transitions. Word has length 542 [2020-07-17 17:07:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:07:57,180 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 324 transitions. [2020-07-17 17:07:57,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-17 17:07:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 324 transitions. [2020-07-17 17:07:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-07-17 17:07:57,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:07:57,185 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:07:57,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-07-17 17:07:57,185 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:07:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:07:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash 461512515, now seen corresponding path program 53 times [2020-07-17 17:07:57,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:07:57,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549759523] [2020-07-17 17:07:57,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:07:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:07:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14045 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 7049 trivial. 0 not checked. [2020-07-17 17:08:05,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549759523] [2020-07-17 17:08:05,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:08:05,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-07-17 17:08:05,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679606454] [2020-07-17 17:08:05,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-17 17:08:05,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:08:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-17 17:08:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=1762, Unknown=0, NotChecked=0, Total=3306 [2020-07-17 17:08:05,722 INFO L87 Difference]: Start difference. First operand 310 states and 324 transitions. Second operand 58 states. [2020-07-17 17:08:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:08:07,228 INFO L93 Difference]: Finished difference Result 321 states and 335 transitions. [2020-07-17 17:08:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-17 17:08:07,229 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 552 [2020-07-17 17:08:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:08:07,231 INFO L225 Difference]: With dead ends: 321 [2020-07-17 17:08:07,231 INFO L226 Difference]: Without dead ends: 315 [2020-07-17 17:08:07,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4622, Invalid=7810, Unknown=0, NotChecked=0, Total=12432 [2020-07-17 17:08:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-17 17:08:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-07-17 17:08:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-07-17 17:08:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 329 transitions. [2020-07-17 17:08:07,245 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 329 transitions. Word has length 552 [2020-07-17 17:08:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:08:07,245 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 329 transitions. [2020-07-17 17:08:07,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-17 17:08:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 329 transitions. [2020-07-17 17:08:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-07-17 17:08:07,249 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:08:07,249 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:08:07,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-07-17 17:08:07,249 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:08:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:08:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash -940697239, now seen corresponding path program 54 times [2020-07-17 17:08:07,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:08:07,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125491911] [2020-07-17 17:08:07,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:08:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14580 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 7317 trivial. 0 not checked. [2020-07-17 17:08:16,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125491911] [2020-07-17 17:08:16,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:08:16,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-07-17 17:08:16,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517954641] [2020-07-17 17:08:16,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-17 17:08:16,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:08:16,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-17 17:08:16,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1600, Invalid=1822, Unknown=0, NotChecked=0, Total=3422 [2020-07-17 17:08:16,287 INFO L87 Difference]: Start difference. First operand 315 states and 329 transitions. Second operand 59 states. [2020-07-17 17:08:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:08:17,847 INFO L93 Difference]: Finished difference Result 326 states and 340 transitions. [2020-07-17 17:08:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-07-17 17:08:17,848 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 562 [2020-07-17 17:08:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:08:17,850 INFO L225 Difference]: With dead ends: 326 [2020-07-17 17:08:17,851 INFO L226 Difference]: Without dead ends: 320 [2020-07-17 17:08:17,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4790, Invalid=8092, Unknown=0, NotChecked=0, Total=12882 [2020-07-17 17:08:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-17 17:08:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2020-07-17 17:08:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-17 17:08:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 334 transitions. [2020-07-17 17:08:17,865 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 334 transitions. Word has length 562 [2020-07-17 17:08:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:08:17,865 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 334 transitions. [2020-07-17 17:08:17,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-17 17:08:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 334 transitions. [2020-07-17 17:08:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-07-17 17:08:17,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:08:17,868 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:08:17,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-07-17 17:08:17,868 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:08:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:08:17,869 INFO L82 PathProgramCache]: Analyzing trace with hash 183436867, now seen corresponding path program 55 times [2020-07-17 17:08:17,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:08:17,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769278157] [2020-07-17 17:08:17,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:08:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15125 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 7590 trivial. 0 not checked. [2020-07-17 17:08:27,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769278157] [2020-07-17 17:08:27,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:08:27,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-07-17 17:08:27,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68313192] [2020-07-17 17:08:27,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-17 17:08:27,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:08:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-17 17:08:27,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=1883, Unknown=0, NotChecked=0, Total=3540 [2020-07-17 17:08:27,059 INFO L87 Difference]: Start difference. First operand 320 states and 334 transitions. Second operand 60 states. [2020-07-17 17:08:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:08:28,650 INFO L93 Difference]: Finished difference Result 331 states and 345 transitions. [2020-07-17 17:08:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-17 17:08:28,651 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 572 [2020-07-17 17:08:28,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:08:28,654 INFO L225 Difference]: With dead ends: 331 [2020-07-17 17:08:28,654 INFO L226 Difference]: Without dead ends: 325 [2020-07-17 17:08:28,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4961, Invalid=8379, Unknown=0, NotChecked=0, Total=13340 [2020-07-17 17:08:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-07-17 17:08:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2020-07-17 17:08:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-07-17 17:08:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 339 transitions. [2020-07-17 17:08:28,672 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 339 transitions. Word has length 572 [2020-07-17 17:08:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:08:28,673 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 339 transitions. [2020-07-17 17:08:28,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-17 17:08:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 339 transitions. [2020-07-17 17:08:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-07-17 17:08:28,677 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:08:28,677 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:08:28,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-07-17 17:08:28,678 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:08:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:08:28,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2007269609, now seen corresponding path program 56 times [2020-07-17 17:08:28,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:08:28,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790149387] [2020-07-17 17:08:28,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:08:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15680 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 7868 trivial. 0 not checked. [2020-07-17 17:08:38,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790149387] [2020-07-17 17:08:38,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:08:38,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-07-17 17:08:38,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075584729] [2020-07-17 17:08:38,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-17 17:08:38,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:08:38,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-17 17:08:38,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1715, Invalid=1945, Unknown=0, NotChecked=0, Total=3660 [2020-07-17 17:08:38,620 INFO L87 Difference]: Start difference. First operand 325 states and 339 transitions. Second operand 61 states. [2020-07-17 17:08:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:08:40,280 INFO L93 Difference]: Finished difference Result 336 states and 350 transitions. [2020-07-17 17:08:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-17 17:08:40,281 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 582 [2020-07-17 17:08:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:08:40,283 INFO L225 Difference]: With dead ends: 336 [2020-07-17 17:08:40,284 INFO L226 Difference]: Without dead ends: 330 [2020-07-17 17:08:40,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5135, Invalid=8671, Unknown=0, NotChecked=0, Total=13806 [2020-07-17 17:08:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-07-17 17:08:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2020-07-17 17:08:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-07-17 17:08:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 344 transitions. [2020-07-17 17:08:40,300 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 344 transitions. Word has length 582 [2020-07-17 17:08:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:08:40,300 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 344 transitions. [2020-07-17 17:08:40,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-17 17:08:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 344 transitions. [2020-07-17 17:08:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-07-17 17:08:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:08:40,305 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:08:40,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-07-17 17:08:40,305 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:08:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:08:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1790975299, now seen corresponding path program 57 times [2020-07-17 17:08:40,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:08:40,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950618307] [2020-07-17 17:08:40,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:08:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16245 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2020-07-17 17:08:50,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950618307] [2020-07-17 17:08:50,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:08:50,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-07-17 17:08:50,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100176634] [2020-07-17 17:08:50,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-17 17:08:50,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:08:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-17 17:08:50,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=2008, Unknown=0, NotChecked=0, Total=3782 [2020-07-17 17:08:50,606 INFO L87 Difference]: Start difference. First operand 330 states and 344 transitions. Second operand 62 states. [2020-07-17 17:08:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:08:52,307 INFO L93 Difference]: Finished difference Result 341 states and 355 transitions. [2020-07-17 17:08:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-17 17:08:52,308 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 592 [2020-07-17 17:08:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:08:52,311 INFO L225 Difference]: With dead ends: 341 [2020-07-17 17:08:52,311 INFO L226 Difference]: Without dead ends: 335 [2020-07-17 17:08:52,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5312, Invalid=8968, Unknown=0, NotChecked=0, Total=14280 [2020-07-17 17:08:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-17 17:08:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2020-07-17 17:08:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-07-17 17:08:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 349 transitions. [2020-07-17 17:08:52,325 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 349 transitions. Word has length 592 [2020-07-17 17:08:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:08:52,326 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 349 transitions. [2020-07-17 17:08:52,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-17 17:08:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 349 transitions. [2020-07-17 17:08:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-07-17 17:08:52,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:08:52,330 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:08:52,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-07-17 17:08:52,330 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:08:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:08:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash 97286249, now seen corresponding path program 58 times [2020-07-17 17:08:52,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:08:52,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796521789] [2020-07-17 17:08:52,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:08:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:08:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16820 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 8439 trivial. 0 not checked. [2020-07-17 17:09:02,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796521789] [2020-07-17 17:09:02,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:09:02,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-07-17 17:09:02,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437821735] [2020-07-17 17:09:02,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-17 17:09:02,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:09:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-17 17:09:03,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1834, Invalid=2072, Unknown=0, NotChecked=0, Total=3906 [2020-07-17 17:09:03,000 INFO L87 Difference]: Start difference. First operand 335 states and 349 transitions. Second operand 63 states. [2020-07-17 17:09:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:09:04,795 INFO L93 Difference]: Finished difference Result 346 states and 360 transitions. [2020-07-17 17:09:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-17 17:09:04,796 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 602 [2020-07-17 17:09:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:09:04,798 INFO L225 Difference]: With dead ends: 346 [2020-07-17 17:09:04,798 INFO L226 Difference]: Without dead ends: 340 [2020-07-17 17:09:04,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5492, Invalid=9270, Unknown=0, NotChecked=0, Total=14762 [2020-07-17 17:09:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-17 17:09:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2020-07-17 17:09:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-07-17 17:09:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 354 transitions. [2020-07-17 17:09:04,814 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 354 transitions. Word has length 602 [2020-07-17 17:09:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:09:04,815 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 354 transitions. [2020-07-17 17:09:04,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-17 17:09:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 354 transitions. [2020-07-17 17:09:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-07-17 17:09:04,819 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:09:04,820 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:09:04,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-07-17 17:09:04,820 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:09:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:09:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1503749187, now seen corresponding path program 59 times [2020-07-17 17:09:04,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:09:04,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614076071] [2020-07-17 17:09:04,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:09:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 17405 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 8732 trivial. 0 not checked. [2020-07-17 17:09:16,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614076071] [2020-07-17 17:09:16,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:09:16,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-07-17 17:09:16,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143717867] [2020-07-17 17:09:16,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-07-17 17:09:16,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:09:16,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-07-17 17:09:16,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=2137, Unknown=0, NotChecked=0, Total=4032 [2020-07-17 17:09:16,014 INFO L87 Difference]: Start difference. First operand 340 states and 354 transitions. Second operand 64 states. [2020-07-17 17:09:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:09:17,745 INFO L93 Difference]: Finished difference Result 351 states and 365 transitions. [2020-07-17 17:09:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-17 17:09:17,746 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 612 [2020-07-17 17:09:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:09:17,748 INFO L225 Difference]: With dead ends: 351 [2020-07-17 17:09:17,749 INFO L226 Difference]: Without dead ends: 345 [2020-07-17 17:09:17,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5675, Invalid=9577, Unknown=0, NotChecked=0, Total=15252 [2020-07-17 17:09:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-07-17 17:09:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2020-07-17 17:09:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-07-17 17:09:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 359 transitions. [2020-07-17 17:09:17,766 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 359 transitions. Word has length 612 [2020-07-17 17:09:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:09:17,766 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 359 transitions. [2020-07-17 17:09:17,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-07-17 17:09:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 359 transitions. [2020-07-17 17:09:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-07-17 17:09:17,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:09:17,771 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:09:17,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-07-17 17:09:17,771 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:09:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:09:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1440350185, now seen corresponding path program 60 times [2020-07-17 17:09:17,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:09:17,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590725582] [2020-07-17 17:09:17,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:09:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18000 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 9030 trivial. 0 not checked. [2020-07-17 17:09:29,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590725582] [2020-07-17 17:09:29,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:09:29,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-07-17 17:09:29,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684084797] [2020-07-17 17:09:29,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-17 17:09:29,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:09:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-17 17:09:29,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1957, Invalid=2203, Unknown=0, NotChecked=0, Total=4160 [2020-07-17 17:09:29,281 INFO L87 Difference]: Start difference. First operand 345 states and 359 transitions. Second operand 65 states. [2020-07-17 17:09:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:09:31,095 INFO L93 Difference]: Finished difference Result 356 states and 370 transitions. [2020-07-17 17:09:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-07-17 17:09:31,095 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 622 [2020-07-17 17:09:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:09:31,098 INFO L225 Difference]: With dead ends: 356 [2020-07-17 17:09:31,098 INFO L226 Difference]: Without dead ends: 350 [2020-07-17 17:09:31,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5861, Invalid=9889, Unknown=0, NotChecked=0, Total=15750 [2020-07-17 17:09:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-17 17:09:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-07-17 17:09:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-07-17 17:09:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 364 transitions. [2020-07-17 17:09:31,111 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 364 transitions. Word has length 622 [2020-07-17 17:09:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:09:31,111 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 364 transitions. [2020-07-17 17:09:31,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-17 17:09:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 364 transitions. [2020-07-17 17:09:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-07-17 17:09:31,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:09:31,115 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:09:31,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-07-17 17:09:31,115 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:09:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:09:31,115 INFO L82 PathProgramCache]: Analyzing trace with hash -348202173, now seen corresponding path program 61 times [2020-07-17 17:09:31,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:09:31,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928772691] [2020-07-17 17:09:31,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:09:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18605 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 9333 trivial. 0 not checked. [2020-07-17 17:09:43,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928772691] [2020-07-17 17:09:43,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:09:43,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-07-17 17:09:43,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077682042] [2020-07-17 17:09:43,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-17 17:09:43,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:09:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-17 17:09:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=2270, Unknown=0, NotChecked=0, Total=4290 [2020-07-17 17:09:43,191 INFO L87 Difference]: Start difference. First operand 350 states and 364 transitions. Second operand 66 states. [2020-07-17 17:09:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:09:45,050 INFO L93 Difference]: Finished difference Result 361 states and 375 transitions. [2020-07-17 17:09:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-17 17:09:45,051 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 632 [2020-07-17 17:09:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:09:45,054 INFO L225 Difference]: With dead ends: 361 [2020-07-17 17:09:45,054 INFO L226 Difference]: Without dead ends: 355 [2020-07-17 17:09:45,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6050, Invalid=10206, Unknown=0, NotChecked=0, Total=16256 [2020-07-17 17:09:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-07-17 17:09:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2020-07-17 17:09:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-17 17:09:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 369 transitions. [2020-07-17 17:09:45,070 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 369 transitions. Word has length 632 [2020-07-17 17:09:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:09:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 369 transitions. [2020-07-17 17:09:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-17 17:09:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 369 transitions. [2020-07-17 17:09:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-07-17 17:09:45,075 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:09:45,076 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:09:45,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-07-17 17:09:45,076 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:09:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:09:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash -431941783, now seen corresponding path program 62 times [2020-07-17 17:09:45,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:09:45,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700765540] [2020-07-17 17:09:45,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:09:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 19220 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 9641 trivial. 0 not checked. [2020-07-17 17:09:57,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700765540] [2020-07-17 17:09:57,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:09:57,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-07-17 17:09:57,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116522085] [2020-07-17 17:09:57,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-17 17:09:57,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:09:57,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-17 17:09:57,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2084, Invalid=2338, Unknown=0, NotChecked=0, Total=4422 [2020-07-17 17:09:57,649 INFO L87 Difference]: Start difference. First operand 355 states and 369 transitions. Second operand 67 states. [2020-07-17 17:09:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:09:59,604 INFO L93 Difference]: Finished difference Result 366 states and 380 transitions. [2020-07-17 17:09:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-17 17:09:59,605 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 642 [2020-07-17 17:09:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:09:59,607 INFO L225 Difference]: With dead ends: 366 [2020-07-17 17:09:59,608 INFO L226 Difference]: Without dead ends: 360 [2020-07-17 17:09:59,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6242, Invalid=10528, Unknown=0, NotChecked=0, Total=16770 [2020-07-17 17:09:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-07-17 17:09:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-07-17 17:09:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-07-17 17:09:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 374 transitions. [2020-07-17 17:09:59,634 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 374 transitions. Word has length 642 [2020-07-17 17:09:59,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:09:59,635 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 374 transitions. [2020-07-17 17:09:59,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-17 17:09:59,635 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 374 transitions. [2020-07-17 17:09:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-07-17 17:09:59,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:09:59,638 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:09:59,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-07-17 17:09:59,639 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:09:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:09:59,639 INFO L82 PathProgramCache]: Analyzing trace with hash -398163389, now seen corresponding path program 63 times [2020-07-17 17:09:59,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:09:59,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600779451] [2020-07-17 17:09:59,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:09:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:09:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19845 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 9954 trivial. 0 not checked. [2020-07-17 17:10:12,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600779451] [2020-07-17 17:10:12,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:10:12,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-07-17 17:10:12,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465215033] [2020-07-17 17:10:12,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-17 17:10:12,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:10:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-17 17:10:12,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=2407, Unknown=0, NotChecked=0, Total=4556 [2020-07-17 17:10:12,993 INFO L87 Difference]: Start difference. First operand 360 states and 374 transitions. Second operand 68 states. [2020-07-17 17:10:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:10:15,011 INFO L93 Difference]: Finished difference Result 371 states and 385 transitions. [2020-07-17 17:10:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-17 17:10:15,011 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 652 [2020-07-17 17:10:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:10:15,013 INFO L225 Difference]: With dead ends: 371 [2020-07-17 17:10:15,013 INFO L226 Difference]: Without dead ends: 365 [2020-07-17 17:10:15,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6437, Invalid=10855, Unknown=0, NotChecked=0, Total=17292 [2020-07-17 17:10:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-07-17 17:10:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-07-17 17:10:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-17 17:10:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 379 transitions. [2020-07-17 17:10:15,035 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 379 transitions. Word has length 652 [2020-07-17 17:10:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:10:15,036 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 379 transitions. [2020-07-17 17:10:15,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-17 17:10:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 379 transitions. [2020-07-17 17:10:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-07-17 17:10:15,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:10:15,040 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:10:15,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-07-17 17:10:15,040 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:10:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:10:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash 276152041, now seen corresponding path program 64 times [2020-07-17 17:10:15,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:10:15,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869694616] [2020-07-17 17:10:15,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:10:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20480 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 10272 trivial. 0 not checked. [2020-07-17 17:10:28,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869694616] [2020-07-17 17:10:28,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:10:28,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-07-17 17:10:28,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130315094] [2020-07-17 17:10:28,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-17 17:10:28,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:10:28,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-17 17:10:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2477, Unknown=0, NotChecked=0, Total=4692 [2020-07-17 17:10:28,815 INFO L87 Difference]: Start difference. First operand 365 states and 379 transitions. Second operand 69 states. [2020-07-17 17:10:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:10:30,873 INFO L93 Difference]: Finished difference Result 376 states and 390 transitions. [2020-07-17 17:10:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-17 17:10:30,874 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 662 [2020-07-17 17:10:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:10:30,876 INFO L225 Difference]: With dead ends: 376 [2020-07-17 17:10:30,877 INFO L226 Difference]: Without dead ends: 370 [2020-07-17 17:10:30,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6635, Invalid=11187, Unknown=0, NotChecked=0, Total=17822 [2020-07-17 17:10:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-07-17 17:10:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-07-17 17:10:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-07-17 17:10:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 384 transitions. [2020-07-17 17:10:30,892 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 384 transitions. Word has length 662 [2020-07-17 17:10:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:10:30,893 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 384 transitions. [2020-07-17 17:10:30,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-17 17:10:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 384 transitions. [2020-07-17 17:10:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-07-17 17:10:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:10:30,898 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:10:30,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-07-17 17:10:30,898 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:10:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:10:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1906419389, now seen corresponding path program 65 times [2020-07-17 17:10:30,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:10:30,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984245300] [2020-07-17 17:10:30,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:10:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21125 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 10595 trivial. 0 not checked. [2020-07-17 17:10:45,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984245300] [2020-07-17 17:10:45,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:10:45,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-07-17 17:10:45,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299325032] [2020-07-17 17:10:45,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-07-17 17:10:45,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:10:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-07-17 17:10:45,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=2548, Unknown=0, NotChecked=0, Total=4830 [2020-07-17 17:10:45,232 INFO L87 Difference]: Start difference. First operand 370 states and 384 transitions. Second operand 70 states. [2020-07-17 17:10:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:10:47,393 INFO L93 Difference]: Finished difference Result 381 states and 395 transitions. [2020-07-17 17:10:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-17 17:10:47,394 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 672 [2020-07-17 17:10:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:10:47,397 INFO L225 Difference]: With dead ends: 381 [2020-07-17 17:10:47,397 INFO L226 Difference]: Without dead ends: 375 [2020-07-17 17:10:47,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6836, Invalid=11524, Unknown=0, NotChecked=0, Total=18360 [2020-07-17 17:10:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-07-17 17:10:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2020-07-17 17:10:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-07-17 17:10:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 389 transitions. [2020-07-17 17:10:47,412 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 389 transitions. Word has length 672 [2020-07-17 17:10:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:10:47,413 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 389 transitions. [2020-07-17 17:10:47,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-07-17 17:10:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 389 transitions. [2020-07-17 17:10:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2020-07-17 17:10:47,417 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:10:47,418 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:10:47,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-07-17 17:10:47,418 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:10:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:10:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1223423593, now seen corresponding path program 66 times [2020-07-17 17:10:47,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:10:47,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848495110] [2020-07-17 17:10:47,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:10:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:10:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21780 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 10923 trivial. 0 not checked. [2020-07-17 17:11:02,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848495110] [2020-07-17 17:11:02,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:11:02,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-07-17 17:11:02,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491981173] [2020-07-17 17:11:02,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-17 17:11:02,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:11:02,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-17 17:11:02,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2350, Invalid=2620, Unknown=0, NotChecked=0, Total=4970 [2020-07-17 17:11:02,358 INFO L87 Difference]: Start difference. First operand 375 states and 389 transitions. Second operand 71 states. [2020-07-17 17:11:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:11:04,588 INFO L93 Difference]: Finished difference Result 386 states and 400 transitions. [2020-07-17 17:11:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-07-17 17:11:04,589 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 682 [2020-07-17 17:11:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:11:04,591 INFO L225 Difference]: With dead ends: 386 [2020-07-17 17:11:04,591 INFO L226 Difference]: Without dead ends: 380 [2020-07-17 17:11:04,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7040, Invalid=11866, Unknown=0, NotChecked=0, Total=18906 [2020-07-17 17:11:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-07-17 17:11:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2020-07-17 17:11:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-07-17 17:11:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 394 transitions. [2020-07-17 17:11:04,609 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 394 transitions. Word has length 682 [2020-07-17 17:11:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:11:04,609 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 394 transitions. [2020-07-17 17:11:04,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-17 17:11:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 394 transitions. [2020-07-17 17:11:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-07-17 17:11:04,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:11:04,615 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:11:04,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-07-17 17:11:04,615 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:11:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:11:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1345871939, now seen corresponding path program 67 times [2020-07-17 17:11:04,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:11:04,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363969096] [2020-07-17 17:11:04,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:11:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 22445 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 11256 trivial. 0 not checked. [2020-07-17 17:11:20,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363969096] [2020-07-17 17:11:20,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:11:20,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-07-17 17:11:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495405150] [2020-07-17 17:11:20,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-17 17:11:20,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:11:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-17 17:11:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=2693, Unknown=0, NotChecked=0, Total=5112 [2020-07-17 17:11:20,425 INFO L87 Difference]: Start difference. First operand 380 states and 394 transitions. Second operand 72 states. [2020-07-17 17:11:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:11:22,725 INFO L93 Difference]: Finished difference Result 391 states and 405 transitions. [2020-07-17 17:11:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-17 17:11:22,726 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 692 [2020-07-17 17:11:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:11:22,729 INFO L225 Difference]: With dead ends: 391 [2020-07-17 17:11:22,729 INFO L226 Difference]: Without dead ends: 385 [2020-07-17 17:11:22,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7247, Invalid=12213, Unknown=0, NotChecked=0, Total=19460 [2020-07-17 17:11:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-07-17 17:11:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2020-07-17 17:11:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-07-17 17:11:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 399 transitions. [2020-07-17 17:11:22,744 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 399 transitions. Word has length 692 [2020-07-17 17:11:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:11:22,744 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 399 transitions. [2020-07-17 17:11:22,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-17 17:11:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 399 transitions. [2020-07-17 17:11:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-07-17 17:11:22,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:11:22,748 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:11:22,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-07-17 17:11:22,748 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:11:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:11:22,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1595391465, now seen corresponding path program 68 times [2020-07-17 17:11:22,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:11:22,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022590359] [2020-07-17 17:11:22,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:11:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 23120 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 11594 trivial. 0 not checked. [2020-07-17 17:11:39,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022590359] [2020-07-17 17:11:39,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:11:39,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-07-17 17:11:39,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569295324] [2020-07-17 17:11:39,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-17 17:11:39,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:11:39,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-17 17:11:39,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2489, Invalid=2767, Unknown=0, NotChecked=0, Total=5256 [2020-07-17 17:11:39,180 INFO L87 Difference]: Start difference. First operand 385 states and 399 transitions. Second operand 73 states. [2020-07-17 17:11:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:11:41,564 INFO L93 Difference]: Finished difference Result 396 states and 410 transitions. [2020-07-17 17:11:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-17 17:11:41,565 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 702 [2020-07-17 17:11:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:11:41,568 INFO L225 Difference]: With dead ends: 396 [2020-07-17 17:11:41,568 INFO L226 Difference]: Without dead ends: 390 [2020-07-17 17:11:41,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7457, Invalid=12565, Unknown=0, NotChecked=0, Total=20022 [2020-07-17 17:11:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-07-17 17:11:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2020-07-17 17:11:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-07-17 17:11:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 404 transitions. [2020-07-17 17:11:41,583 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 404 transitions. Word has length 702 [2020-07-17 17:11:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:11:41,583 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 404 transitions. [2020-07-17 17:11:41,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-17 17:11:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 404 transitions. [2020-07-17 17:11:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2020-07-17 17:11:41,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:11:41,588 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:11:41,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-07-17 17:11:41,588 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:11:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:11:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1786865853, now seen corresponding path program 69 times [2020-07-17 17:11:41,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:11:41,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136771363] [2020-07-17 17:11:41,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:11:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:11:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 23805 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 11937 trivial. 0 not checked. [2020-07-17 17:11:59,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136771363] [2020-07-17 17:11:59,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:11:59,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-07-17 17:11:59,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320002775] [2020-07-17 17:11:59,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-17 17:11:59,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:11:59,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-17 17:11:59,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=2842, Unknown=0, NotChecked=0, Total=5402 [2020-07-17 17:11:59,059 INFO L87 Difference]: Start difference. First operand 390 states and 404 transitions. Second operand 74 states. [2020-07-17 17:12:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:12:01,500 INFO L93 Difference]: Finished difference Result 401 states and 415 transitions. [2020-07-17 17:12:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-17 17:12:01,500 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 712 [2020-07-17 17:12:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:12:01,503 INFO L225 Difference]: With dead ends: 401 [2020-07-17 17:12:01,503 INFO L226 Difference]: Without dead ends: 395 [2020-07-17 17:12:01,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7670, Invalid=12922, Unknown=0, NotChecked=0, Total=20592 [2020-07-17 17:12:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-17 17:12:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-07-17 17:12:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-07-17 17:12:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 409 transitions. [2020-07-17 17:12:01,517 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 409 transitions. Word has length 712 [2020-07-17 17:12:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:12:01,518 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 409 transitions. [2020-07-17 17:12:01,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-17 17:12:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 409 transitions. [2020-07-17 17:12:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-07-17 17:12:01,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:12:01,524 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:12:01,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-07-17 17:12:01,525 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:12:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:12:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1116924567, now seen corresponding path program 70 times [2020-07-17 17:12:01,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:12:01,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379486462] [2020-07-17 17:12:01,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:12:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 24500 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 12285 trivial. 0 not checked. [2020-07-17 17:12:19,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379486462] [2020-07-17 17:12:19,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:12:19,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-07-17 17:12:19,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331108499] [2020-07-17 17:12:19,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-17 17:12:19,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:12:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-17 17:12:19,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2632, Invalid=2918, Unknown=0, NotChecked=0, Total=5550 [2020-07-17 17:12:19,475 INFO L87 Difference]: Start difference. First operand 395 states and 409 transitions. Second operand 75 states. [2020-07-17 17:12:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:12:22,012 INFO L93 Difference]: Finished difference Result 406 states and 420 transitions. [2020-07-17 17:12:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-17 17:12:22,013 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 722 [2020-07-17 17:12:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:12:22,016 INFO L225 Difference]: With dead ends: 406 [2020-07-17 17:12:22,016 INFO L226 Difference]: Without dead ends: 400 [2020-07-17 17:12:22,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4900 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7886, Invalid=13284, Unknown=0, NotChecked=0, Total=21170 [2020-07-17 17:12:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-07-17 17:12:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2020-07-17 17:12:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-07-17 17:12:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 414 transitions. [2020-07-17 17:12:22,032 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 414 transitions. Word has length 722 [2020-07-17 17:12:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:12:22,032 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 414 transitions. [2020-07-17 17:12:22,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-17 17:12:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 414 transitions. [2020-07-17 17:12:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-07-17 17:12:22,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:12:22,036 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:12:22,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-07-17 17:12:22,037 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:12:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:12:22,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2061303363, now seen corresponding path program 71 times [2020-07-17 17:12:22,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:12:22,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604964627] [2020-07-17 17:12:22,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:12:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25205 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 12638 trivial. 0 not checked. [2020-07-17 17:12:40,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604964627] [2020-07-17 17:12:40,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:12:40,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-07-17 17:12:40,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974089125] [2020-07-17 17:12:40,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-17 17:12:40,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:12:40,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-17 17:12:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=2995, Unknown=0, NotChecked=0, Total=5700 [2020-07-17 17:12:40,549 INFO L87 Difference]: Start difference. First operand 400 states and 414 transitions. Second operand 76 states. [2020-07-17 17:12:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:12:43,151 INFO L93 Difference]: Finished difference Result 411 states and 425 transitions. [2020-07-17 17:12:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-17 17:12:43,152 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 732 [2020-07-17 17:12:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:12:43,155 INFO L225 Difference]: With dead ends: 411 [2020-07-17 17:12:43,155 INFO L226 Difference]: Without dead ends: 405 [2020-07-17 17:12:43,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8105, Invalid=13651, Unknown=0, NotChecked=0, Total=21756 [2020-07-17 17:12:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-07-17 17:12:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2020-07-17 17:12:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-07-17 17:12:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 419 transitions. [2020-07-17 17:12:43,170 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 419 transitions. Word has length 732 [2020-07-17 17:12:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:12:43,170 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 419 transitions. [2020-07-17 17:12:43,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-17 17:12:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 419 transitions. [2020-07-17 17:12:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2020-07-17 17:12:43,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:12:43,175 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:12:43,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-07-17 17:12:43,175 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:12:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:12:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1453327127, now seen corresponding path program 72 times [2020-07-17 17:12:43,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:12:43,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355820048] [2020-07-17 17:12:43,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:12:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:12:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25920 backedges. 0 proven. 12924 refuted. 0 times theorem prover too weak. 12996 trivial. 0 not checked. [2020-07-17 17:13:02,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355820048] [2020-07-17 17:13:02,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:13:02,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-07-17 17:13:02,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292624432] [2020-07-17 17:13:02,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-17 17:13:02,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:13:02,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-17 17:13:02,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2779, Invalid=3073, Unknown=0, NotChecked=0, Total=5852 [2020-07-17 17:13:02,623 INFO L87 Difference]: Start difference. First operand 405 states and 419 transitions. Second operand 77 states. [2020-07-17 17:13:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:13:05,307 INFO L93 Difference]: Finished difference Result 416 states and 430 transitions. [2020-07-17 17:13:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-17 17:13:05,308 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 742 [2020-07-17 17:13:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:13:05,311 INFO L225 Difference]: With dead ends: 416 [2020-07-17 17:13:05,311 INFO L226 Difference]: Without dead ends: 410 [2020-07-17 17:13:05,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8327, Invalid=14023, Unknown=0, NotChecked=0, Total=22350 [2020-07-17 17:13:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-07-17 17:13:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2020-07-17 17:13:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-07-17 17:13:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 424 transitions. [2020-07-17 17:13:05,329 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 424 transitions. Word has length 742 [2020-07-17 17:13:05,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:13:05,330 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 424 transitions. [2020-07-17 17:13:05,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-17 17:13:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 424 transitions. [2020-07-17 17:13:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-07-17 17:13:05,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:13:05,336 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:13:05,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-07-17 17:13:05,337 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:13:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:13:05,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1845521085, now seen corresponding path program 73 times [2020-07-17 17:13:05,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:13:05,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424389056] [2020-07-17 17:13:05,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:13:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 26645 backedges. 0 proven. 13286 refuted. 0 times theorem prover too weak. 13359 trivial. 0 not checked. [2020-07-17 17:13:25,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424389056] [2020-07-17 17:13:25,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:13:25,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-07-17 17:13:25,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364229956] [2020-07-17 17:13:25,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-17 17:13:25,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:13:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-17 17:13:25,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=3152, Unknown=0, NotChecked=0, Total=6006 [2020-07-17 17:13:25,414 INFO L87 Difference]: Start difference. First operand 410 states and 424 transitions. Second operand 78 states. [2020-07-17 17:13:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:13:28,191 INFO L93 Difference]: Finished difference Result 421 states and 435 transitions. [2020-07-17 17:13:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-17 17:13:28,192 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 752 [2020-07-17 17:13:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:13:28,195 INFO L225 Difference]: With dead ends: 421 [2020-07-17 17:13:28,195 INFO L226 Difference]: Without dead ends: 415 [2020-07-17 17:13:28,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8552, Invalid=14400, Unknown=0, NotChecked=0, Total=22952 [2020-07-17 17:13:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-07-17 17:13:28,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2020-07-17 17:13:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-07-17 17:13:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 429 transitions. [2020-07-17 17:13:28,210 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 429 transitions. Word has length 752 [2020-07-17 17:13:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:13:28,210 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 429 transitions. [2020-07-17 17:13:28,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-17 17:13:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 429 transitions. [2020-07-17 17:13:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2020-07-17 17:13:28,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:13:28,215 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:13:28,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-07-17 17:13:28,215 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:13:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:13:28,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2090568599, now seen corresponding path program 74 times [2020-07-17 17:13:28,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:13:28,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239304636] [2020-07-17 17:13:28,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:13:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 27380 backedges. 0 proven. 13653 refuted. 0 times theorem prover too weak. 13727 trivial. 0 not checked. [2020-07-17 17:13:49,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239304636] [2020-07-17 17:13:49,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:13:49,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-07-17 17:13:49,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517217992] [2020-07-17 17:13:49,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-17 17:13:49,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:13:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-17 17:13:49,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2930, Invalid=3232, Unknown=0, NotChecked=0, Total=6162 [2020-07-17 17:13:49,543 INFO L87 Difference]: Start difference. First operand 415 states and 429 transitions. Second operand 79 states. [2020-07-17 17:13:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:13:52,695 INFO L93 Difference]: Finished difference Result 426 states and 440 transitions. [2020-07-17 17:13:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-17 17:13:52,697 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 762 [2020-07-17 17:13:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:13:52,701 INFO L225 Difference]: With dead ends: 426 [2020-07-17 17:13:52,701 INFO L226 Difference]: Without dead ends: 420 [2020-07-17 17:13:52,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=8780, Invalid=14782, Unknown=0, NotChecked=0, Total=23562 [2020-07-17 17:13:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-07-17 17:13:52,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2020-07-17 17:13:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-07-17 17:13:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 434 transitions. [2020-07-17 17:13:52,719 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 434 transitions. Word has length 762 [2020-07-17 17:13:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:13:52,719 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 434 transitions. [2020-07-17 17:13:52,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-17 17:13:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 434 transitions. [2020-07-17 17:13:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-07-17 17:13:52,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:13:52,725 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:13:52,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-07-17 17:13:52,725 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:13:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:13:52,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1584243645, now seen corresponding path program 75 times [2020-07-17 17:13:52,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:13:52,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806356764] [2020-07-17 17:13:52,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:13:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:13:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28125 backedges. 0 proven. 14025 refuted. 0 times theorem prover too weak. 14100 trivial. 0 not checked. [2020-07-17 17:14:15,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806356764] [2020-07-17 17:14:15,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:14:15,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-07-17 17:14:15,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401289885] [2020-07-17 17:14:15,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-17 17:14:15,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:14:15,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-17 17:14:15,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=3313, Unknown=0, NotChecked=0, Total=6320 [2020-07-17 17:14:15,327 INFO L87 Difference]: Start difference. First operand 420 states and 434 transitions. Second operand 80 states. [2020-07-17 17:14:18,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:14:18,553 INFO L93 Difference]: Finished difference Result 431 states and 445 transitions. [2020-07-17 17:14:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-17 17:14:18,554 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 772 [2020-07-17 17:14:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:14:18,558 INFO L225 Difference]: With dead ends: 431 [2020-07-17 17:14:18,558 INFO L226 Difference]: Without dead ends: 425 [2020-07-17 17:14:18,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=9011, Invalid=15169, Unknown=0, NotChecked=0, Total=24180 [2020-07-17 17:14:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-07-17 17:14:18,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2020-07-17 17:14:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-17 17:14:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 439 transitions. [2020-07-17 17:14:18,574 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 439 transitions. Word has length 772 [2020-07-17 17:14:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:14:18,575 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 439 transitions. [2020-07-17 17:14:18,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-17 17:14:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 439 transitions. [2020-07-17 17:14:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-07-17 17:14:18,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:14:18,580 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 77, 76, 76, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:14:18,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-07-17 17:14:18,580 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:14:18,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:14:18,581 INFO L82 PathProgramCache]: Analyzing trace with hash 116292585, now seen corresponding path program 76 times [2020-07-17 17:14:18,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:14:18,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883570071] [2020-07-17 17:14:18,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:14:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 28880 backedges. 0 proven. 14402 refuted. 0 times theorem prover too weak. 14478 trivial. 0 not checked. [2020-07-17 17:14:42,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883570071] [2020-07-17 17:14:42,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:14:42,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-07-17 17:14:42,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700588211] [2020-07-17 17:14:42,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-17 17:14:42,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:14:42,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-17 17:14:42,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=3395, Unknown=0, NotChecked=0, Total=6480 [2020-07-17 17:14:42,534 INFO L87 Difference]: Start difference. First operand 425 states and 439 transitions. Second operand 81 states. [2020-07-17 17:14:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:14:45,899 INFO L93 Difference]: Finished difference Result 436 states and 450 transitions. [2020-07-17 17:14:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-17 17:14:45,900 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 782 [2020-07-17 17:14:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:14:45,904 INFO L225 Difference]: With dead ends: 436 [2020-07-17 17:14:45,904 INFO L226 Difference]: Without dead ends: 430 [2020-07-17 17:14:45,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9245, Invalid=15561, Unknown=0, NotChecked=0, Total=24806 [2020-07-17 17:14:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-07-17 17:14:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2020-07-17 17:14:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-07-17 17:14:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 444 transitions. [2020-07-17 17:14:45,926 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 444 transitions. Word has length 782 [2020-07-17 17:14:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:14:45,927 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 444 transitions. [2020-07-17 17:14:45,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-17 17:14:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 444 transitions. [2020-07-17 17:14:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-07-17 17:14:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:14:45,935 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 77, 77, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:14:45,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-07-17 17:14:45,936 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:14:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:14:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1698779971, now seen corresponding path program 77 times [2020-07-17 17:14:45,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:14:45,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584524643] [2020-07-17 17:14:45,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:14:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:14:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 0 proven. 14784 refuted. 0 times theorem prover too weak. 14861 trivial. 0 not checked. [2020-07-17 17:15:11,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584524643] [2020-07-17 17:15:11,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:15:11,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-07-17 17:15:11,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510276903] [2020-07-17 17:15:11,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-07-17 17:15:11,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:15:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-07-17 17:15:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=3478, Unknown=0, NotChecked=0, Total=6642 [2020-07-17 17:15:11,286 INFO L87 Difference]: Start difference. First operand 430 states and 444 transitions. Second operand 82 states. [2020-07-17 17:15:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:15:14,883 INFO L93 Difference]: Finished difference Result 441 states and 455 transitions. [2020-07-17 17:15:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-17 17:15:14,884 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 792 [2020-07-17 17:15:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:15:14,887 INFO L225 Difference]: With dead ends: 441 [2020-07-17 17:15:14,887 INFO L226 Difference]: Without dead ends: 435 [2020-07-17 17:15:14,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=9482, Invalid=15958, Unknown=0, NotChecked=0, Total=25440 [2020-07-17 17:15:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-07-17 17:15:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2020-07-17 17:15:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-07-17 17:15:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 449 transitions. [2020-07-17 17:15:14,906 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 449 transitions. Word has length 792 [2020-07-17 17:15:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:15:14,907 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 449 transitions. [2020-07-17 17:15:14,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-07-17 17:15:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 449 transitions. [2020-07-17 17:15:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-07-17 17:15:14,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:15:14,913 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 79, 78, 78, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:15:14,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-07-17 17:15:14,914 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:15:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:15:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1972235415, now seen corresponding path program 78 times [2020-07-17 17:15:14,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:15:14,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582201518] [2020-07-17 17:15:14,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:15:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30420 backedges. 0 proven. 15171 refuted. 0 times theorem prover too weak. 15249 trivial. 0 not checked. [2020-07-17 17:15:41,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582201518] [2020-07-17 17:15:41,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:15:41,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-07-17 17:15:41,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736882243] [2020-07-17 17:15:41,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-17 17:15:41,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:15:41,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-17 17:15:41,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3244, Invalid=3562, Unknown=0, NotChecked=0, Total=6806 [2020-07-17 17:15:41,177 INFO L87 Difference]: Start difference. First operand 435 states and 449 transitions. Second operand 83 states. [2020-07-17 17:15:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:15:44,607 INFO L93 Difference]: Finished difference Result 446 states and 460 transitions. [2020-07-17 17:15:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-07-17 17:15:44,608 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 802 [2020-07-17 17:15:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:15:44,611 INFO L225 Difference]: With dead ends: 446 [2020-07-17 17:15:44,611 INFO L226 Difference]: Without dead ends: 440 [2020-07-17 17:15:44,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=9722, Invalid=16360, Unknown=0, NotChecked=0, Total=26082 [2020-07-17 17:15:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-07-17 17:15:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2020-07-17 17:15:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-07-17 17:15:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 454 transitions. [2020-07-17 17:15:44,629 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 454 transitions. Word has length 802 [2020-07-17 17:15:44,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:15:44,630 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 454 transitions. [2020-07-17 17:15:44,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-17 17:15:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 454 transitions. [2020-07-17 17:15:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-07-17 17:15:44,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:15:44,636 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 80, 79, 79, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:15:44,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-07-17 17:15:44,636 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:15:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:15:44,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1303935555, now seen corresponding path program 79 times [2020-07-17 17:15:44,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:15:44,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161909666] [2020-07-17 17:15:44,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:15:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:15:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31205 backedges. 0 proven. 15563 refuted. 0 times theorem prover too weak. 15642 trivial. 0 not checked. [2020-07-17 17:16:12,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161909666] [2020-07-17 17:16:12,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:16:12,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-07-17 17:16:12,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72821825] [2020-07-17 17:16:12,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-17 17:16:12,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:16:12,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-17 17:16:12,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=3647, Unknown=0, NotChecked=0, Total=6972 [2020-07-17 17:16:12,746 INFO L87 Difference]: Start difference. First operand 440 states and 454 transitions. Second operand 84 states. [2020-07-17 17:16:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:16:16,359 INFO L93 Difference]: Finished difference Result 451 states and 465 transitions. [2020-07-17 17:16:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-17 17:16:16,360 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 812 [2020-07-17 17:16:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:16:16,363 INFO L225 Difference]: With dead ends: 451 [2020-07-17 17:16:16,364 INFO L226 Difference]: Without dead ends: 445 [2020-07-17 17:16:16,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=9965, Invalid=16767, Unknown=0, NotChecked=0, Total=26732 [2020-07-17 17:16:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-07-17 17:16:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-07-17 17:16:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-07-17 17:16:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 459 transitions. [2020-07-17 17:16:16,383 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 459 transitions. Word has length 812 [2020-07-17 17:16:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:16:16,383 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 459 transitions. [2020-07-17 17:16:16,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-17 17:16:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 459 transitions. [2020-07-17 17:16:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-07-17 17:16:16,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:16:16,390 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 80, 80, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:16:16,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-07-17 17:16:16,390 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:16:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:16:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1063467753, now seen corresponding path program 80 times [2020-07-17 17:16:16,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:16:16,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853921601] [2020-07-17 17:16:16,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:16:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32000 backedges. 0 proven. 15960 refuted. 0 times theorem prover too weak. 16040 trivial. 0 not checked. [2020-07-17 17:16:44,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853921601] [2020-07-17 17:16:44,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:16:44,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-07-17 17:16:44,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513640067] [2020-07-17 17:16:44,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-17 17:16:44,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:16:44,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-17 17:16:44,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3407, Invalid=3733, Unknown=0, NotChecked=0, Total=7140 [2020-07-17 17:16:44,583 INFO L87 Difference]: Start difference. First operand 445 states and 459 transitions. Second operand 85 states. [2020-07-17 17:16:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:16:48,324 INFO L93 Difference]: Finished difference Result 456 states and 470 transitions. [2020-07-17 17:16:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-17 17:16:48,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 822 [2020-07-17 17:16:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:16:48,330 INFO L225 Difference]: With dead ends: 456 [2020-07-17 17:16:48,330 INFO L226 Difference]: Without dead ends: 450 [2020-07-17 17:16:48,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10211, Invalid=17179, Unknown=0, NotChecked=0, Total=27390 [2020-07-17 17:16:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-07-17 17:16:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-07-17 17:16:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-07-17 17:16:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 464 transitions. [2020-07-17 17:16:48,355 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 464 transitions. Word has length 822 [2020-07-17 17:16:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:16:48,356 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 464 transitions. [2020-07-17 17:16:48,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-17 17:16:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 464 transitions. [2020-07-17 17:16:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-07-17 17:16:48,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:16:48,365 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 82, 81, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:16:48,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-07-17 17:16:48,365 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:16:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:16:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1084477763, now seen corresponding path program 81 times [2020-07-17 17:16:48,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:16:48,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642434528] [2020-07-17 17:16:48,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:16:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:16:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32805 backedges. 0 proven. 16362 refuted. 0 times theorem prover too weak. 16443 trivial. 0 not checked. [2020-07-17 17:17:19,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642434528] [2020-07-17 17:17:19,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:17:19,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-07-17 17:17:19,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015627304] [2020-07-17 17:17:19,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-17 17:17:19,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:17:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-17 17:17:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=3820, Unknown=0, NotChecked=0, Total=7310 [2020-07-17 17:17:19,900 INFO L87 Difference]: Start difference. First operand 450 states and 464 transitions. Second operand 86 states. [2020-07-17 17:17:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:17:23,899 INFO L93 Difference]: Finished difference Result 461 states and 475 transitions. [2020-07-17 17:17:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-17 17:17:23,900 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 832 [2020-07-17 17:17:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:17:23,904 INFO L225 Difference]: With dead ends: 461 [2020-07-17 17:17:23,904 INFO L226 Difference]: Without dead ends: 455 [2020-07-17 17:17:23,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=10460, Invalid=17596, Unknown=0, NotChecked=0, Total=28056 [2020-07-17 17:17:23,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-07-17 17:17:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2020-07-17 17:17:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-07-17 17:17:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 469 transitions. [2020-07-17 17:17:23,921 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 469 transitions. Word has length 832 [2020-07-17 17:17:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:17:23,922 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 469 transitions. [2020-07-17 17:17:23,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-17 17:17:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 469 transitions. [2020-07-17 17:17:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-07-17 17:17:23,928 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:17:23,928 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 83, 82, 82, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:17:23,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-07-17 17:17:23,928 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:17:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:17:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1916138089, now seen corresponding path program 82 times [2020-07-17 17:17:23,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:17:23,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898747445] [2020-07-17 17:17:23,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:17:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 33620 backedges. 0 proven. 16769 refuted. 0 times theorem prover too weak. 16851 trivial. 0 not checked. [2020-07-17 17:17:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898747445] [2020-07-17 17:17:54,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:17:54,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-07-17 17:17:54,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493284253] [2020-07-17 17:17:54,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-17 17:17:54,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:17:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-17 17:17:54,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3574, Invalid=3908, Unknown=0, NotChecked=0, Total=7482 [2020-07-17 17:17:54,656 INFO L87 Difference]: Start difference. First operand 455 states and 469 transitions. Second operand 87 states. [2020-07-17 17:17:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:17:58,756 INFO L93 Difference]: Finished difference Result 466 states and 480 transitions. [2020-07-17 17:17:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-17 17:17:58,757 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 842 [2020-07-17 17:17:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:17:58,761 INFO L225 Difference]: With dead ends: 466 [2020-07-17 17:17:58,761 INFO L226 Difference]: Without dead ends: 460 [2020-07-17 17:17:58,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6724 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=10712, Invalid=18018, Unknown=0, NotChecked=0, Total=28730 [2020-07-17 17:17:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-07-17 17:17:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-07-17 17:17:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-07-17 17:17:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 474 transitions. [2020-07-17 17:17:58,786 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 474 transitions. Word has length 842 [2020-07-17 17:17:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:17:58,787 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 474 transitions. [2020-07-17 17:17:58,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-17 17:17:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 474 transitions. [2020-07-17 17:17:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-07-17 17:17:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:17:58,798 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 83, 83, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:17:58,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-07-17 17:17:58,798 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:17:58,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:17:58,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1487886403, now seen corresponding path program 83 times [2020-07-17 17:17:58,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:17:58,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707914336] [2020-07-17 17:17:58,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:17:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:17:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:18:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat