/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:32,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:32,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:32,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:32,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:32,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:32,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:32,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:32,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:32,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:32,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:32,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:32,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:32,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:32,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:32,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:32,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:32,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:32,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:32,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:32,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:32,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:32,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:32,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:32,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:14:32,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:32,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:32,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:32,182 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 13:14:32,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:32,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:32,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:32,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:32,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:32,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:32,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:32,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:32,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:32,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:32,195 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:32,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:32,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:32,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:32,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:32,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:32,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:32,197 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:32,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:32,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:32,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:32,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:32,481 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:32,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-07-17 13:14:32,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc2e4269/0c6d453d2f554be2a94afe002e608239/FLAG1166bc59d [2020-07-17 13:14:33,070 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:33,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-07-17 13:14:33,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc2e4269/0c6d453d2f554be2a94afe002e608239/FLAG1166bc59d [2020-07-17 13:14:33,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc2e4269/0c6d453d2f554be2a94afe002e608239 [2020-07-17 13:14:33,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:33,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:33,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:33,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:33,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:33,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488f01b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33, skipping insertion in model container [2020-07-17 13:14:33,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:33,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:33,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:33,629 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:33,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:33,663 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:33,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33 WrapperNode [2020-07-17 13:14:33,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:33,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:33,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:33,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:33,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (1/1) ... [2020-07-17 13:14:33,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:33,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:33,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:33,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:33,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (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 13:14:33,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:33,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:33,845 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-17 13:14:33,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:33,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:14:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-17 13:14:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:34,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:34,032 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 13:14:34,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:34 BoogieIcfgContainer [2020-07-17 13:14:34,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:34,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:34,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:34,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:34,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:33" (1/3) ... [2020-07-17 13:14:34,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94ae6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:34, skipping insertion in model container [2020-07-17 13:14:34,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:33" (2/3) ... [2020-07-17 13:14:34,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94ae6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:34, skipping insertion in model container [2020-07-17 13:14:34,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:34" (3/3) ... [2020-07-17 13:14:34,046 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-07-17 13:14:34,058 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:34,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:34,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:34,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:34,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:34,115 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:34,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:34,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:34,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:34,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:34,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-17 13:14:34,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 13:14:34,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:34,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:34,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-07-17 13:14:34,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:34,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908283028] [2020-07-17 13:14:34,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,454 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 13:14:34,456 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:34,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908283028] [2020-07-17 13:14:34,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:34,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:14:34,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75745457] [2020-07-17 13:14:34,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:14:34,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:34,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:14:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:14:34,486 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 7 states. [2020-07-17 13:14:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:34,643 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-07-17 13:14:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 13:14:34,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-07-17 13:14:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:34,658 INFO L225 Difference]: With dead ends: 44 [2020-07-17 13:14:34,658 INFO L226 Difference]: Without dead ends: 26 [2020-07-17 13:14:34,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-17 13:14:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-17 13:14:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-17 13:14:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-17 13:14:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-07-17 13:14:34,715 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-07-17 13:14:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:34,716 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-07-17 13:14:34,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:14:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-07-17 13:14:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 13:14:34,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:34,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:34,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:34,720 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:34,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-07-17 13:14:34,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:34,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921582194] [2020-07-17 13:14:34,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 13:14:34,952 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:34,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921582194] [2020-07-17 13:14:34,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:34,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 13:14:34,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213692703] [2020-07-17 13:14:34,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 13:14:34,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:34,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 13:14:34,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:14:34,956 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-07-17 13:14:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:35,155 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-07-17 13:14:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:14:35,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-17 13:14:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:35,158 INFO L225 Difference]: With dead ends: 37 [2020-07-17 13:14:35,158 INFO L226 Difference]: Without dead ends: 31 [2020-07-17 13:14:35,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-07-17 13:14:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-17 13:14:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-17 13:14:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-17 13:14:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-07-17 13:14:35,173 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-07-17 13:14:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:35,173 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-07-17 13:14:35,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 13:14:35,174 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-17 13:14:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 13:14:35,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:35,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:35,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:35,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:35,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-07-17 13:14:35,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:35,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542703217] [2020-07-17 13:14:35,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-17 13:14:35,401 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:35,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542703217] [2020-07-17 13:14:35,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:35,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 13:14:35,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371076482] [2020-07-17 13:14:35,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 13:14:35,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 13:14:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-17 13:14:35,404 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 11 states. [2020-07-17 13:14:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:35,641 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-07-17 13:14:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 13:14:35,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-07-17 13:14:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:35,643 INFO L225 Difference]: With dead ends: 42 [2020-07-17 13:14:35,643 INFO L226 Difference]: Without dead ends: 36 [2020-07-17 13:14:35,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:14:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-17 13:14:35,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-17 13:14:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-17 13:14:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-17 13:14:35,654 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 35 [2020-07-17 13:14:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:35,654 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-17 13:14:35,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 13:14:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-17 13:14:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 13:14:35,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:35,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:35,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:14:35,657 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1069340361, now seen corresponding path program 3 times [2020-07-17 13:14:35,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:35,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130247663] [2020-07-17 13:14:35,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-17 13:14:35,892 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:35,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130247663] [2020-07-17 13:14:35,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:35,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-17 13:14:35,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138188950] [2020-07-17 13:14:35,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 13:14:35,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:35,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 13:14:35,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-07-17 13:14:35,895 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2020-07-17 13:14:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:36,228 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-17 13:14:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 13:14:36,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-07-17 13:14:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:36,230 INFO L225 Difference]: With dead ends: 47 [2020-07-17 13:14:36,230 INFO L226 Difference]: Without dead ends: 41 [2020-07-17 13:14:36,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2020-07-17 13:14:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-17 13:14:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-17 13:14:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-17 13:14:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-07-17 13:14:36,242 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 43 [2020-07-17 13:14:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:36,243 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-07-17 13:14:36,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 13:14:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-07-17 13:14:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 13:14:36,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:36,245 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:36,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:14:36,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -287672703, now seen corresponding path program 4 times [2020-07-17 13:14:36,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:36,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275646425] [2020-07-17 13:14:36,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-17 13:14:36,616 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:36,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275646425] [2020-07-17 13:14:36,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:36,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 13:14:36,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509696255] [2020-07-17 13:14:36,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 13:14:36,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:36,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 13:14:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-07-17 13:14:36,619 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 15 states. [2020-07-17 13:14:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:37,005 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-07-17 13:14:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 13:14:37,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-07-17 13:14:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:37,007 INFO L225 Difference]: With dead ends: 52 [2020-07-17 13:14:37,007 INFO L226 Difference]: Without dead ends: 46 [2020-07-17 13:14:37,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-07-17 13:14:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-17 13:14:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-17 13:14:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-17 13:14:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-07-17 13:14:37,019 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 51 [2020-07-17 13:14:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:37,019 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-07-17 13:14:37,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 13:14:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-07-17 13:14:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-17 13:14:37,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:37,021 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:37,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:14:37,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:37,022 INFO L82 PathProgramCache]: Analyzing trace with hash 389514871, now seen corresponding path program 5 times [2020-07-17 13:14:37,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:37,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395286266] [2020-07-17 13:14:37,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-17 13:14:37,342 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:37,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395286266] [2020-07-17 13:14:37,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:37,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 13:14:37,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537278760] [2020-07-17 13:14:37,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 13:14:37,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:37,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 13:14:37,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-07-17 13:14:37,345 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 17 states. [2020-07-17 13:14:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:37,923 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-07-17 13:14:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 13:14:37,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-07-17 13:14:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:37,925 INFO L225 Difference]: With dead ends: 57 [2020-07-17 13:14:37,925 INFO L226 Difference]: Without dead ends: 51 [2020-07-17 13:14:37,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 13:14:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-17 13:14:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-17 13:14:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-17 13:14:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-07-17 13:14:37,936 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 59 [2020-07-17 13:14:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:37,936 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-07-17 13:14:37,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 13:14:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-07-17 13:14:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-17 13:14:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:37,938 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:37,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:14:37,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:37,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1451925313, now seen corresponding path program 6 times [2020-07-17 13:14:37,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:37,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139325409] [2020-07-17 13:14:37,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-17 13:14:38,355 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:38,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139325409] [2020-07-17 13:14:38,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:38,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-17 13:14:38,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036066520] [2020-07-17 13:14:38,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 13:14:38,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:38,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 13:14:38,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-07-17 13:14:38,358 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 19 states. [2020-07-17 13:14:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:38,990 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-07-17 13:14:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 13:14:38,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-07-17 13:14:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:38,994 INFO L225 Difference]: With dead ends: 62 [2020-07-17 13:14:38,994 INFO L226 Difference]: Without dead ends: 56 [2020-07-17 13:14:38,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2020-07-17 13:14:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-17 13:14:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-17 13:14:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 13:14:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-07-17 13:14:39,006 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 67 [2020-07-17 13:14:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:39,006 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-07-17 13:14:39,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 13:14:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-07-17 13:14:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-17 13:14:39,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:39,008 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:39,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:14:39,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:39,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2078207049, now seen corresponding path program 7 times [2020-07-17 13:14:39,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:39,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655835824] [2020-07-17 13:14:39,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-17 13:14:39,479 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:39,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655835824] [2020-07-17 13:14:39,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:39,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-17 13:14:39,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383937566] [2020-07-17 13:14:39,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 13:14:39,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 13:14:39,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-07-17 13:14:39,482 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 21 states. [2020-07-17 13:14:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:40,277 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-07-17 13:14:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-17 13:14:40,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-07-17 13:14:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:40,282 INFO L225 Difference]: With dead ends: 67 [2020-07-17 13:14:40,282 INFO L226 Difference]: Without dead ends: 61 [2020-07-17 13:14:40,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 13:14:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-17 13:14:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-17 13:14:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-17 13:14:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-07-17 13:14:40,302 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 75 [2020-07-17 13:14:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:40,302 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-07-17 13:14:40,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 13:14:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-07-17 13:14:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 13:14:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:40,304 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:40,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:14:40,305 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 768055297, now seen corresponding path program 8 times [2020-07-17 13:14:40,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:40,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008517791] [2020-07-17 13:14:40,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-07-17 13:14:40,838 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:40,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008517791] [2020-07-17 13:14:40,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:40,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-17 13:14:40,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51750203] [2020-07-17 13:14:40,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 13:14:40,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:40,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 13:14:40,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-07-17 13:14:40,843 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 23 states. [2020-07-17 13:14:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:41,858 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2020-07-17 13:14:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-17 13:14:41,858 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-07-17 13:14:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:41,860 INFO L225 Difference]: With dead ends: 72 [2020-07-17 13:14:41,862 INFO L226 Difference]: Without dead ends: 66 [2020-07-17 13:14:41,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=2272, Unknown=0, NotChecked=0, Total=2450 [2020-07-17 13:14:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-17 13:14:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-17 13:14:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-17 13:14:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-07-17 13:14:41,875 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 83 [2020-07-17 13:14:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:41,876 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-07-17 13:14:41,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 13:14:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-07-17 13:14:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-17 13:14:41,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:41,878 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:41,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:14:41,878 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1891881207, now seen corresponding path program 9 times [2020-07-17 13:14:41,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:41,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778931188] [2020-07-17 13:14:41,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-07-17 13:14:42,475 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:42,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778931188] [2020-07-17 13:14:42,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:42,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-17 13:14:42,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931942092] [2020-07-17 13:14:42,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-17 13:14:42,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-17 13:14:42,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-07-17 13:14:42,478 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 25 states. [2020-07-17 13:14:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:43,716 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-07-17 13:14:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-17 13:14:43,717 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 91 [2020-07-17 13:14:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:43,718 INFO L225 Difference]: With dead ends: 77 [2020-07-17 13:14:43,719 INFO L226 Difference]: Without dead ends: 71 [2020-07-17 13:14:43,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2020-07-17 13:14:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-17 13:14:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-07-17 13:14:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-17 13:14:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-07-17 13:14:43,747 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 91 [2020-07-17 13:14:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:43,748 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-07-17 13:14:43,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-17 13:14:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-07-17 13:14:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-17 13:14:43,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:43,750 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:43,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:14:43,751 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:43,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2102223041, now seen corresponding path program 10 times [2020-07-17 13:14:43,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:43,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218286347] [2020-07-17 13:14:43,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-07-17 13:14:44,448 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:44,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218286347] [2020-07-17 13:14:44,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:44,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-17 13:14:44,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376910413] [2020-07-17 13:14:44,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 13:14:44,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 13:14:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-07-17 13:14:44,450 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 27 states. [2020-07-17 13:14:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:45,904 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-07-17 13:14:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-17 13:14:45,905 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 99 [2020-07-17 13:14:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:45,907 INFO L225 Difference]: With dead ends: 82 [2020-07-17 13:14:45,907 INFO L226 Difference]: Without dead ends: 76 [2020-07-17 13:14:45,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=3324, Unknown=0, NotChecked=0, Total=3540 [2020-07-17 13:14:45,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-17 13:14:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-07-17 13:14:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-17 13:14:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-07-17 13:14:45,923 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 99 [2020-07-17 13:14:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:45,923 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-07-17 13:14:45,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 13:14:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-07-17 13:14:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-17 13:14:45,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:45,925 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:45,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:14:45,925 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash -505168329, now seen corresponding path program 11 times [2020-07-17 13:14:45,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:45,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289164945] [2020-07-17 13:14:45,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-07-17 13:14:46,883 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:46,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289164945] [2020-07-17 13:14:46,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:46,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-07-17 13:14:46,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661686787] [2020-07-17 13:14:46,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 13:14:46,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 13:14:46,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-07-17 13:14:46,887 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 29 states. [2020-07-17 13:14:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:48,604 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-07-17 13:14:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-17 13:14:48,605 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 107 [2020-07-17 13:14:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:48,606 INFO L225 Difference]: With dead ends: 87 [2020-07-17 13:14:48,606 INFO L226 Difference]: Without dead ends: 81 [2020-07-17 13:14:48,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=3925, Unknown=0, NotChecked=0, Total=4160 [2020-07-17 13:14:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-17 13:14:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-17 13:14:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 13:14:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-07-17 13:14:48,622 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 107 [2020-07-17 13:14:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:48,623 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-07-17 13:14:48,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 13:14:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-07-17 13:14:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-17 13:14:48,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:48,624 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 13:14:48,625 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1831339647, now seen corresponding path program 12 times [2020-07-17 13:14:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:48,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362497095] [2020-07-17 13:14:48,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-07-17 13:14:49,613 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:49,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362497095] [2020-07-17 13:14:49,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:49,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-07-17 13:14:49,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549237575] [2020-07-17 13:14:49,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 13:14:49,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 13:14:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-07-17 13:14:49,615 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 31 states. [2020-07-17 13:14:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:51,634 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-07-17 13:14:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-17 13:14:51,635 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 115 [2020-07-17 13:14:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:51,636 INFO L225 Difference]: With dead ends: 92 [2020-07-17 13:14:51,636 INFO L226 Difference]: Without dead ends: 86 [2020-07-17 13:14:51,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=254, Invalid=4576, Unknown=0, NotChecked=0, Total=4830 [2020-07-17 13:14:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-17 13:14:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-07-17 13:14:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-17 13:14:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-07-17 13:14:51,656 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 115 [2020-07-17 13:14:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:51,656 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-07-17 13:14:51,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 13:14:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-07-17 13:14:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-17 13:14:51,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:51,658 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:51,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 13:14:51,659 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1220224137, now seen corresponding path program 13 times [2020-07-17 13:14:51,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:51,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627302906] [2020-07-17 13:14:51,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-07-17 13:14:52,913 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:52,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627302906] [2020-07-17 13:14:52,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:52,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-17 13:14:52,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885264664] [2020-07-17 13:14:52,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-17 13:14:52,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:52,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-17 13:14:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 13:14:52,917 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 33 states. [2020-07-17 13:14:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:55,211 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-07-17 13:14:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-17 13:14:55,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 123 [2020-07-17 13:14:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:55,213 INFO L225 Difference]: With dead ends: 97 [2020-07-17 13:14:55,213 INFO L226 Difference]: Without dead ends: 91 [2020-07-17 13:14:55,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=273, Invalid=5277, Unknown=0, NotChecked=0, Total=5550 [2020-07-17 13:14:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-17 13:14:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-07-17 13:14:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-17 13:14:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-07-17 13:14:55,228 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 123 [2020-07-17 13:14:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:55,229 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-07-17 13:14:55,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-17 13:14:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-07-17 13:14:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-17 13:14:55,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:55,231 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:55,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 13:14:55,231 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1054645695, now seen corresponding path program 14 times [2020-07-17 13:14:55,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:55,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523696865] [2020-07-17 13:14:55,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-07-17 13:14:56,802 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:56,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523696865] [2020-07-17 13:14:56,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:56,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-07-17 13:14:56,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329174453] [2020-07-17 13:14:56,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-17 13:14:56,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-17 13:14:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 13:14:56,806 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 35 states. [2020-07-17 13:14:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:59,474 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2020-07-17 13:14:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-17 13:14:59,475 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 131 [2020-07-17 13:14:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:59,477 INFO L225 Difference]: With dead ends: 102 [2020-07-17 13:14:59,477 INFO L226 Difference]: Without dead ends: 96 [2020-07-17 13:14:59,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2020-07-17 13:14:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-17 13:14:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-17 13:14:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-17 13:14:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-07-17 13:14:59,494 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 131 [2020-07-17 13:14:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:59,494 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-07-17 13:14:59,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-17 13:14:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-07-17 13:14:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-17 13:14:59,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:59,496 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:59,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 13:14:59,497 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash -341104457, now seen corresponding path program 15 times [2020-07-17 13:14:59,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:59,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782268178] [2020-07-17 13:14:59,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-07-17 13:15:00,923 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:00,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782268178] [2020-07-17 13:15:00,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:00,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-07-17 13:15:00,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806736509] [2020-07-17 13:15:00,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-17 13:15:00,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-17 13:15:00,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2020-07-17 13:15:00,925 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 37 states. [2020-07-17 13:15:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:03,883 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-07-17 13:15:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-17 13:15:03,884 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 139 [2020-07-17 13:15:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:03,885 INFO L225 Difference]: With dead ends: 107 [2020-07-17 13:15:03,886 INFO L226 Difference]: Without dead ends: 101 [2020-07-17 13:15:03,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=311, Invalid=6829, Unknown=0, NotChecked=0, Total=7140 [2020-07-17 13:15:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-17 13:15:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-07-17 13:15:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-17 13:15:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-07-17 13:15:03,902 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 139 [2020-07-17 13:15:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:03,903 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-07-17 13:15:03,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-17 13:15:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-07-17 13:15:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-17 13:15:03,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:03,905 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:03,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 13:15:03,905 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash 535534337, now seen corresponding path program 16 times [2020-07-17 13:15:03,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:03,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380593460] [2020-07-17 13:15:03,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-17 13:15:05,448 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:05,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380593460] [2020-07-17 13:15:05,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:05,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-07-17 13:15:05,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941709449] [2020-07-17 13:15:05,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-17 13:15:05,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:05,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-17 13:15:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 13:15:05,450 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 39 states. [2020-07-17 13:15:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:08,759 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-07-17 13:15:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-17 13:15:08,760 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 147 [2020-07-17 13:15:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:08,761 INFO L225 Difference]: With dead ends: 112 [2020-07-17 13:15:08,762 INFO L226 Difference]: Without dead ends: 106 [2020-07-17 13:15:08,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=330, Invalid=7680, Unknown=0, NotChecked=0, Total=8010 [2020-07-17 13:15:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-17 13:15:08,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-07-17 13:15:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-17 13:15:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-07-17 13:15:08,786 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 147 [2020-07-17 13:15:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:08,787 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-07-17 13:15:08,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-17 13:15:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-07-17 13:15:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-17 13:15:08,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:08,790 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:08,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 13:15:08,791 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:08,791 INFO L82 PathProgramCache]: Analyzing trace with hash -723868169, now seen corresponding path program 17 times [2020-07-17 13:15:08,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:08,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949483306] [2020-07-17 13:15:08,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-07-17 13:15:10,541 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:10,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949483306] [2020-07-17 13:15:10,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:10,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-07-17 13:15:10,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400786577] [2020-07-17 13:15:10,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-17 13:15:10,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-17 13:15:10,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 13:15:10,544 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 41 states. [2020-07-17 13:15:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:14,225 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-07-17 13:15:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-17 13:15:14,234 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 155 [2020-07-17 13:15:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:14,235 INFO L225 Difference]: With dead ends: 117 [2020-07-17 13:15:14,235 INFO L226 Difference]: Without dead ends: 111 [2020-07-17 13:15:14,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=349, Invalid=8581, Unknown=0, NotChecked=0, Total=8930 [2020-07-17 13:15:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-17 13:15:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-17 13:15:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-17 13:15:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-07-17 13:15:14,251 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 155 [2020-07-17 13:15:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:14,252 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-07-17 13:15:14,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-17 13:15:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-07-17 13:15:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-17 13:15:14,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:14,257 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:14,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 13:15:14,257 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:14,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1273799617, now seen corresponding path program 18 times [2020-07-17 13:15:14,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:14,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177651943] [2020-07-17 13:15:14,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-07-17 13:15:16,117 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:16,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177651943] [2020-07-17 13:15:16,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:16,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-07-17 13:15:16,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825226939] [2020-07-17 13:15:16,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-17 13:15:16,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:16,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-17 13:15:16,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2020-07-17 13:15:16,119 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 43 states. [2020-07-17 13:15:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:20,237 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-07-17 13:15:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-17 13:15:20,240 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 163 [2020-07-17 13:15:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:20,241 INFO L225 Difference]: With dead ends: 122 [2020-07-17 13:15:20,242 INFO L226 Difference]: Without dead ends: 116 [2020-07-17 13:15:20,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=368, Invalid=9532, Unknown=0, NotChecked=0, Total=9900 [2020-07-17 13:15:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-17 13:15:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-07-17 13:15:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-17 13:15:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2020-07-17 13:15:20,260 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 163 [2020-07-17 13:15:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:20,260 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2020-07-17 13:15:20,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-17 13:15:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2020-07-17 13:15:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-17 13:15:20,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:20,263 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:20,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 13:15:20,263 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1670861623, now seen corresponding path program 19 times [2020-07-17 13:15:20,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:20,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766882617] [2020-07-17 13:15:20,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-07-17 13:15:22,389 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:22,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766882617] [2020-07-17 13:15:22,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:22,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-07-17 13:15:22,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704433938] [2020-07-17 13:15:22,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-17 13:15:22,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:22,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-17 13:15:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 13:15:22,391 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 45 states. [2020-07-17 13:15:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:27,063 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-07-17 13:15:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-17 13:15:27,064 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 171 [2020-07-17 13:15:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:27,066 INFO L225 Difference]: With dead ends: 127 [2020-07-17 13:15:27,066 INFO L226 Difference]: Without dead ends: 121 [2020-07-17 13:15:27,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=387, Invalid=10533, Unknown=0, NotChecked=0, Total=10920 [2020-07-17 13:15:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-17 13:15:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-17 13:15:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-17 13:15:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-07-17 13:15:27,083 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 171 [2020-07-17 13:15:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:27,083 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-07-17 13:15:27,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-17 13:15:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-07-17 13:15:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-17 13:15:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:27,084 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:27,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 13:15:27,085 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash 652377217, now seen corresponding path program 20 times [2020-07-17 13:15:27,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:27,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134763218] [2020-07-17 13:15:27,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-07-17 13:15:29,466 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:29,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134763218] [2020-07-17 13:15:29,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:29,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-07-17 13:15:29,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107136055] [2020-07-17 13:15:29,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-17 13:15:29,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-17 13:15:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2020-07-17 13:15:29,468 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 47 states. [2020-07-17 13:15:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:34,714 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2020-07-17 13:15:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-17 13:15:34,715 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 179 [2020-07-17 13:15:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:34,717 INFO L225 Difference]: With dead ends: 132 [2020-07-17 13:15:34,717 INFO L226 Difference]: Without dead ends: 126 [2020-07-17 13:15:34,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1993 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=406, Invalid=11584, Unknown=0, NotChecked=0, Total=11990 [2020-07-17 13:15:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-17 13:15:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-17 13:15:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-17 13:15:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-07-17 13:15:34,735 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 179 [2020-07-17 13:15:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:34,736 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-07-17 13:15:34,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-17 13:15:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-07-17 13:15:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-17 13:15:34,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:34,738 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:34,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 13:15:34,738 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1671770231, now seen corresponding path program 21 times [2020-07-17 13:15:34,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:34,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083009065] [2020-07-17 13:15:34,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-07-17 13:15:37,408 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:37,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083009065] [2020-07-17 13:15:37,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:37,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-07-17 13:15:37,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102492372] [2020-07-17 13:15:37,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-17 13:15:37,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:37,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-17 13:15:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2020-07-17 13:15:37,411 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 49 states. [2020-07-17 13:15:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:43,225 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-07-17 13:15:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-17 13:15:43,229 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 187 [2020-07-17 13:15:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:43,231 INFO L225 Difference]: With dead ends: 137 [2020-07-17 13:15:43,231 INFO L226 Difference]: Without dead ends: 131 [2020-07-17 13:15:43,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=425, Invalid=12685, Unknown=0, NotChecked=0, Total=13110 [2020-07-17 13:15:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-17 13:15:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-07-17 13:15:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-17 13:15:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-07-17 13:15:43,254 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 187 [2020-07-17 13:15:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:43,255 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-07-17 13:15:43,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-17 13:15:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-07-17 13:15:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-17 13:15:43,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:43,257 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:43,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 13:15:43,257 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:43,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1752619711, now seen corresponding path program 22 times [2020-07-17 13:15:43,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:43,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899308674] [2020-07-17 13:15:43,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-07-17 13:15:46,179 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:46,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899308674] [2020-07-17 13:15:46,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:46,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-07-17 13:15:46,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376749718] [2020-07-17 13:15:46,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-17 13:15:46,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:46,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-17 13:15:46,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2020-07-17 13:15:46,181 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 51 states. [2020-07-17 13:15:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:15:52,640 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2020-07-17 13:15:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-17 13:15:52,641 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 195 [2020-07-17 13:15:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:15:52,643 INFO L225 Difference]: With dead ends: 142 [2020-07-17 13:15:52,643 INFO L226 Difference]: Without dead ends: 136 [2020-07-17 13:15:52,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=444, Invalid=13836, Unknown=0, NotChecked=0, Total=14280 [2020-07-17 13:15:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-17 13:15:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-07-17 13:15:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-17 13:15:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-07-17 13:15:52,666 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 195 [2020-07-17 13:15:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:15:52,666 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-07-17 13:15:52,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-17 13:15:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-07-17 13:15:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-17 13:15:52,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:15:52,668 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:15:52,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-17 13:15:52,668 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:15:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:15:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1144504905, now seen corresponding path program 23 times [2020-07-17 13:15:52,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:15:52,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665194372] [2020-07-17 13:15:52,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:15:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:15:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-07-17 13:15:55,883 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:15:55,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665194372] [2020-07-17 13:15:55,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:15:55,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-07-17 13:15:55,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065354366] [2020-07-17 13:15:55,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-17 13:15:55,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:15:55,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-17 13:15:55,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2020-07-17 13:15:55,885 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 53 states. [2020-07-17 13:16:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:16:03,022 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-07-17 13:16:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-17 13:16:03,024 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 203 [2020-07-17 13:16:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:16:03,026 INFO L225 Difference]: With dead ends: 147 [2020-07-17 13:16:03,026 INFO L226 Difference]: Without dead ends: 141 [2020-07-17 13:16:03,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2602 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=463, Invalid=15037, Unknown=0, NotChecked=0, Total=15500 [2020-07-17 13:16:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-17 13:16:03,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-07-17 13:16:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-07-17 13:16:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-07-17 13:16:03,051 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 203 [2020-07-17 13:16:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:16:03,052 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-07-17 13:16:03,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-17 13:16:03,052 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-07-17 13:16:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-17 13:16:03,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:16:03,054 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:16:03,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-17 13:16:03,054 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:16:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:16:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1235000833, now seen corresponding path program 24 times [2020-07-17 13:16:03,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:16:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821829217] [2020-07-17 13:16:03,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:16:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-07-17 13:16:06,645 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:16:06,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821829217] [2020-07-17 13:16:06,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:16:06,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-07-17 13:16:06,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554636843] [2020-07-17 13:16:06,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-17 13:16:06,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:16:06,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-17 13:16:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2020-07-17 13:16:06,647 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 55 states. [2020-07-17 13:16:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:16:14,501 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2020-07-17 13:16:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-17 13:16:14,502 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 211 [2020-07-17 13:16:14,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:16:14,505 INFO L225 Difference]: With dead ends: 152 [2020-07-17 13:16:14,505 INFO L226 Difference]: Without dead ends: 146 [2020-07-17 13:16:14,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=482, Invalid=16288, Unknown=0, NotChecked=0, Total=16770 [2020-07-17 13:16:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-17 13:16:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-07-17 13:16:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-17 13:16:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-07-17 13:16:14,533 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 211 [2020-07-17 13:16:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:16:14,533 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-07-17 13:16:14,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-17 13:16:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-07-17 13:16:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-07-17 13:16:14,535 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:16:14,535 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:16:14,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-17 13:16:14,536 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:16:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:16:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1379632393, now seen corresponding path program 25 times [2020-07-17 13:16:14,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:16:14,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42529105] [2020-07-17 13:16:14,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:16:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-07-17 13:16:18,505 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:16:18,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42529105] [2020-07-17 13:16:18,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:16:18,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-07-17 13:16:18,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191238556] [2020-07-17 13:16:18,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-17 13:16:18,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:16:18,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-17 13:16:18,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2020-07-17 13:16:18,507 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 57 states. [2020-07-17 13:16:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:16:27,322 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-07-17 13:16:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-17 13:16:27,323 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 219 [2020-07-17 13:16:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:16:27,325 INFO L225 Difference]: With dead ends: 157 [2020-07-17 13:16:27,325 INFO L226 Difference]: Without dead ends: 151 [2020-07-17 13:16:27,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=501, Invalid=17589, Unknown=0, NotChecked=0, Total=18090 [2020-07-17 13:16:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-17 13:16:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-07-17 13:16:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-07-17 13:16:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-07-17 13:16:27,353 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 219 [2020-07-17 13:16:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:16:27,353 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-07-17 13:16:27,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-17 13:16:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-07-17 13:16:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-17 13:16:27,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:16:27,355 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:16:27,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-17 13:16:27,356 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:16:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:16:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1842931393, now seen corresponding path program 26 times [2020-07-17 13:16:27,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:16:27,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860912930] [2020-07-17 13:16:27,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:16:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-07-17 13:16:31,726 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:16:31,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860912930] [2020-07-17 13:16:31,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:16:31,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-07-17 13:16:31,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422059213] [2020-07-17 13:16:31,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-17 13:16:31,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:16:31,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-17 13:16:31,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2020-07-17 13:16:31,728 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 59 states. [2020-07-17 13:16:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:16:41,661 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2020-07-17 13:16:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-17 13:16:41,664 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 227 [2020-07-17 13:16:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:16:41,666 INFO L225 Difference]: With dead ends: 162 [2020-07-17 13:16:41,667 INFO L226 Difference]: Without dead ends: 156 [2020-07-17 13:16:41,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3292 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=520, Invalid=18940, Unknown=0, NotChecked=0, Total=19460 [2020-07-17 13:16:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-17 13:16:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-07-17 13:16:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-07-17 13:16:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2020-07-17 13:16:41,696 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 227 [2020-07-17 13:16:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:16:41,696 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2020-07-17 13:16:41,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-17 13:16:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2020-07-17 13:16:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-07-17 13:16:41,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:16:41,698 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:16:41,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-17 13:16:41,698 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:16:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:16:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash 375253047, now seen corresponding path program 27 times [2020-07-17 13:16:41,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:16:41,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062485713] [2020-07-17 13:16:41,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:16:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-07-17 13:16:46,816 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:16:46,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062485713] [2020-07-17 13:16:46,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:16:46,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-07-17 13:16:46,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175513562] [2020-07-17 13:16:46,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-17 13:16:46,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:16:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-17 13:16:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2020-07-17 13:16:46,818 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 61 states. [2020-07-17 13:16:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:16:58,127 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-07-17 13:16:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-17 13:16:58,128 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 235 [2020-07-17 13:16:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:16:58,130 INFO L225 Difference]: With dead ends: 167 [2020-07-17 13:16:58,130 INFO L226 Difference]: Without dead ends: 161 [2020-07-17 13:16:58,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=539, Invalid=20341, Unknown=0, NotChecked=0, Total=20880 [2020-07-17 13:16:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-07-17 13:16:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-07-17 13:16:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-17 13:16:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2020-07-17 13:16:58,163 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 235 [2020-07-17 13:16:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:16:58,163 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2020-07-17 13:16:58,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-17 13:16:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2020-07-17 13:16:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-07-17 13:16:58,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:16:58,166 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:16:58,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-17 13:16:58,166 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:16:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:16:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2046427009, now seen corresponding path program 28 times [2020-07-17 13:16:58,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:16:58,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699072567] [2020-07-17 13:16:58,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:16:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:16:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-07-17 13:17:03,852 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:03,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699072567] [2020-07-17 13:17:03,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:03,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-07-17 13:17:03,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468958724] [2020-07-17 13:17:03,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-17 13:17:03,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:03,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-17 13:17:03,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2020-07-17 13:17:03,854 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 63 states. [2020-07-17 13:17:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:16,741 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2020-07-17 13:17:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-17 13:17:16,743 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 243 [2020-07-17 13:17:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:16,745 INFO L225 Difference]: With dead ends: 172 [2020-07-17 13:17:16,745 INFO L226 Difference]: Without dead ends: 166 [2020-07-17 13:17:16,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=558, Invalid=21792, Unknown=0, NotChecked=0, Total=22350 [2020-07-17 13:17:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-17 13:17:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-07-17 13:17:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-07-17 13:17:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-07-17 13:17:16,771 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 243 [2020-07-17 13:17:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:16,772 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-07-17 13:17:16,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-17 13:17:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-07-17 13:17:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-17 13:17:16,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:16,773 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:16,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-17 13:17:16,774 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1386707593, now seen corresponding path program 29 times [2020-07-17 13:17:16,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:16,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073867153] [2020-07-17 13:17:16,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-07-17 13:17:23,050 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:23,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073867153] [2020-07-17 13:17:23,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:23,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-07-17 13:17:23,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146690] [2020-07-17 13:17:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-17 13:17:23,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:23,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-17 13:17:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2020-07-17 13:17:23,053 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 65 states. [2020-07-17 13:17:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:38,018 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-07-17 13:17:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-07-17 13:17:38,020 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 251 [2020-07-17 13:17:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:38,022 INFO L225 Difference]: With dead ends: 177 [2020-07-17 13:17:38,022 INFO L226 Difference]: Without dead ends: 171 [2020-07-17 13:17:38,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=577, Invalid=23293, Unknown=0, NotChecked=0, Total=23870 [2020-07-17 13:17:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-17 13:17:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-07-17 13:17:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-17 13:17:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-07-17 13:17:38,048 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 251 [2020-07-17 13:17:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:38,049 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-07-17 13:17:38,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-17 13:17:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-07-17 13:17:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-07-17 13:17:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:17:38,050 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:17:38,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-17 13:17:38,050 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:17:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:17:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash -390338495, now seen corresponding path program 30 times [2020-07-17 13:17:38,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:17:38,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012939061] [2020-07-17 13:17:38,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:17:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:17:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-07-17 13:17:43,864 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:17:43,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012939061] [2020-07-17 13:17:43,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:17:43,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2020-07-17 13:17:43,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778908370] [2020-07-17 13:17:43,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-17 13:17:43,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:17:43,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-17 13:17:43,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=3320, Unknown=0, NotChecked=0, Total=4290 [2020-07-17 13:17:43,867 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 66 states. [2020-07-17 13:17:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:17:47,532 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-07-17 13:17:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-07-17 13:17:47,532 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 259 [2020-07-17 13:17:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:17:47,533 INFO L225 Difference]: With dead ends: 171 [2020-07-17 13:17:47,533 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:17:47,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2352, Invalid=7350, Unknown=0, NotChecked=0, Total=9702 [2020-07-17 13:17:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:17:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:17:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:17:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:17:47,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2020-07-17 13:17:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:17:47,537 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:17:47,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-17 13:17:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:17:47,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:17:47,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-17 13:17:47,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:17:47,678 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 1402 [2020-07-17 13:17:48,910 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1837 DAG size of output: 127 [2020-07-17 13:17:49,662 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 1775 DAG size of output: 126 [2020-07-17 13:17:50,466 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 1837 DAG size of output: 127 [2020-07-17 13:17:51,094 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 1775 DAG size of output: 126 [2020-07-17 13:17:52,905 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 3057 DAG size of output: 215 [2020-07-17 13:17:53,485 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 1433 DAG size of output: 17 [2020-07-17 13:17:53,630 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 6 [2020-07-17 13:17:53,744 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-07-17 13:17:53,855 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-07-17 13:17:54,375 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 1399 DAG size of output: 19 [2020-07-17 13:17:54,886 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 1433 DAG size of output: 17 [2020-07-17 13:17:55,000 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-07-17 13:17:55,501 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 1399 DAG size of output: 19 [2020-07-17 13:17:56,496 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 2653 DAG size of output: 28 [2020-07-17 13:17:56,501 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,501 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,501 INFO L264 CegarLoopResult]: At program point L17(lines 17 19) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-07-17 13:17:56,501 INFO L264 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|)) (<= (+ |hanoi_#in~n| 4) |hanoi_#res|) (<= 7 |hanoi_#res|) (<= 3 |hanoi_#t~ret0|) .cse0) (and (<= |hanoi_#in~n| 2) (<= 3 |hanoi_#res|) .cse0 (= 1 |hanoi_#t~ret0|)) (and (<= 1073741823 |hanoi_#t~ret0|) .cse0 (<= 2147483647 |hanoi_#res|)))) [2020-07-17 13:17:56,501 INFO L264 CegarLoopResult]: At program point hanoiEXIT(lines 16 21) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and (= 1 |hanoi_#in~n|) .cse0 (= 1 |hanoi_#res|)) (and (<= (+ |hanoi_#in~n| 1) |hanoi_#res|) (<= 3 |hanoi_#res|) .cse0) (and .cse0 (<= 2147483647 |hanoi_#res|)))) [2020-07-17 13:17:56,502 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-07-17 13:17:56,502 INFO L264 CegarLoopResult]: At program point hanoiFINAL(lines 16 21) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and (= 1 |hanoi_#in~n|) .cse0 (= 1 |hanoi_#res|)) (and (<= (+ |hanoi_#in~n| 1) |hanoi_#res|) (<= 3 |hanoi_#res|) .cse0) (and .cse0 (<= 2147483647 |hanoi_#res|)))) [2020-07-17 13:17:56,502 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-07-17 13:17:56,502 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and (<= |hanoi_#in~n| 2) .cse0 (= 1 |hanoi_#t~ret0|)) (and (<= 1073741823 |hanoi_#t~ret0|) .cse0) (and (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|)) (<= 3 |hanoi_#t~ret0|) .cse0))) [2020-07-17 13:17:56,502 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= 1 |hanoi_#in~n|) (= hanoi_~n |hanoi_#in~n|)) [2020-07-17 13:17:56,502 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and (<= |hanoi_#in~n| 2) .cse0 (= 1 |hanoi_#t~ret0|)) (and (<= 1073741823 |hanoi_#t~ret0|) .cse0) (and (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|)) (<= 3 |hanoi_#t~ret0|) .cse0))) [2020-07-17 13:17:56,502 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,502 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,502 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,502 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= main_~n~0 main_~result~0) [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L30(lines 30 34) the Hoare annotation is: (<= main_~n~0 main_~result~0) [2020-07-17 13:17:56,503 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (<= main_~n~0 |main_#t~ret2|) [2020-07-17 13:17:56,503 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (<= main_~n~0 |main_#t~ret2|) [2020-07-17 13:17:56,503 INFO L271 CegarLoopResult]: At program point L26(lines 26 28) the Hoare annotation is: true [2020-07-17 13:17:56,503 INFO L264 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (and (<= main_~n~0 |main_#t~ret2|) (<= main_~n~0 main_~result~0)) [2020-07-17 13:17:56,503 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-07-17 13:17:56,504 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2020-07-17 13:17:56,504 INFO L271 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-07-17 13:17:56,504 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2020-07-17 13:17:56,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:17:56 BoogieIcfgContainer [2020-07-17 13:17:56,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:17:56,525 INFO L168 Benchmark]: Toolchain (without parser) took 203096.56 ms. Allocated memory was 144.7 MB in the beginning and 952.1 MB in the end (delta: 807.4 MB). Free memory was 103.1 MB in the beginning and 157.7 MB in the end (delta: -54.7 MB). Peak memory consumption was 832.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,526 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.89 ms. Allocated memory is still 144.7 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,527 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 ms. Allocated memory is still 144.7 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,528 INFO L168 Benchmark]: RCFGBuilder took 343.43 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 169.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,528 INFO L168 Benchmark]: TraceAbstraction took 202484.93 ms. Allocated memory was 201.9 MB in the beginning and 952.1 MB in the end (delta: 750.3 MB). Free memory was 169.0 MB in the beginning and 157.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 841.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:17:56,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.89 ms. Allocated memory is still 144.7 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.07 ms. Allocated memory is still 144.7 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.43 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 169.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202484.93 ms. Allocated memory was 201.9 MB in the beginning and 952.1 MB in the end (delta: 750.3 MB). Free memory was 169.0 MB in the beginning and 157.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 841.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for hanoi Derived contract for procedure hanoi: (((1 == \old(n) && n == \old(n)) && 1 == \result) || ((\old(n) + 1 <= \result && 3 <= \result) && n == \old(n))) || (n == \old(n) && 2147483647 <= \result) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 193.4s, OverallIterations: 31, TraceHistogramMax: 31, AutomataDifference: 128.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1469 SDtfs, 2513 SDslu, 40689 SDs, 0 SdLazy, 73981 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3629 GetRequests, 1087 SyntacticMatches, 30 SemanticMatches, 2512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43766 ImplicationChecksByTransitivity, 109.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 31 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 39 PreInvPairs, 2576 NumberOfFragments, 221 HoareAnnotationTreeSize, 39 FomulaSimplifications, 202664 FormulaSimplificationTreeSizeReduction, 5.3s HoareSimplificationTime, 30 FomulaSimplificationsInter, 20979 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...