/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 0.1.25-3af5e1f [2020-09-04 16:13:24,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:13:24,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:13:25,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:13:25,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:13:25,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:13:25,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:13:25,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:13:25,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:13:25,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:13:25,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:13:25,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:13:25,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:13:25,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:13:25,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:13:25,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:13:25,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:13:25,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:13:25,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:13:25,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:13:25,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:13:25,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:13:25,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:13:25,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:13:25,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:13:25,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:13:25,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:13:25,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:13:25,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:13:25,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:13:25,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:13:25,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:13:25,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:13:25,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:13:25,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:13:25,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:13:25,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:13:25,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:13:25,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:13:25,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:13:25,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:13:25,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:13:25,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:13:25,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:13:25,105 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:13:25,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:13:25,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:13:25,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:13:25,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:13:25,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:13:25,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:13:25,106 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:13:25,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:13:25,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:13:25,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:13:25,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:13:25,576 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:13:25,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-04 16:13:25,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b40a1dca/5a0af659a45e44cb81e07aac3292b146/FLAG655010a3d [2020-09-04 16:13:26,174 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:13:26,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-04 16:13:26,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b40a1dca/5a0af659a45e44cb81e07aac3292b146/FLAG655010a3d [2020-09-04 16:13:26,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b40a1dca/5a0af659a45e44cb81e07aac3292b146 [2020-09-04 16:13:26,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:13:26,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:13:26,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:13:26,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:13:26,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:13:26,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26, skipping insertion in model container [2020-09-04 16:13:26,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:13:26,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:13:26,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:13:26,788 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:13:26,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:13:26,825 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:13:26,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26 WrapperNode [2020-09-04 16:13:26,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:13:26,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:13:26,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:13:26,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:13:26,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... [2020-09-04 16:13:26,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:13:26,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:13:26,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:13:26,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:13:26,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:13:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:13:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:13:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-04 16:13:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:13:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:13:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:13:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-04 16:13:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:13:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:13:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:13:27,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:13:27,219 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:13:27,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:13:27 BoogieIcfgContainer [2020-09-04 16:13:27,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:13:27,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:13:27,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:13:27,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:13:27,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:13:26" (1/3) ... [2020-09-04 16:13:27,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa453e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:13:27, skipping insertion in model container [2020-09-04 16:13:27,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:26" (2/3) ... [2020-09-04 16:13:27,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa453e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:13:27, skipping insertion in model container [2020-09-04 16:13:27,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:13:27" (3/3) ... [2020-09-04 16:13:27,234 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-09-04 16:13:27,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:13:27,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:13:27,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:13:27,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:13:27,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:13:27,353 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:13:27,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:13:27,354 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:13:27,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:13:27,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:13:27,355 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:13:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-04 16:13:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 16:13:27,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:27,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:13:27,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:27,396 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-04 16:13:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:27,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433645093] [2020-09-04 16:13:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:27,471 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:13:27,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433645093] [2020-09-04 16:13:27,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:27,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:13:27,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655203225] [2020-09-04 16:13:27,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:13:27,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:27,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:13:27,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:13:27,728 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 7 states. [2020-09-04 16:13:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:27,896 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-04 16:13:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 16:13:27,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-04 16:13:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:27,911 INFO L225 Difference]: With dead ends: 44 [2020-09-04 16:13:27,912 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 16:13:27,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:13:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 16:13:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 16:13:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 16:13:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 16:13:27,972 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-04 16:13:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:27,972 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 16:13:27,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:13:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 16:13:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 16:13:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:27,975 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] [2020-09-04 16:13:27,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:13:27,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-04 16:13:27,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:27,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236800773] [2020-09-04 16:13:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:27,980 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:13:28,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236800773] [2020-09-04 16:13:28,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:28,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:13:28,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241907972] [2020-09-04 16:13:28,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:13:28,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:28,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:13:28,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:13:28,188 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 16:13:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:28,373 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-04 16:13:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:13:28,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-04 16:13:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:28,375 INFO L225 Difference]: With dead ends: 37 [2020-09-04 16:13:28,376 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 16:13:28,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:13:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 16:13:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-04 16:13:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 16:13:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-04 16:13:28,389 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-04 16:13:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:28,389 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-04 16:13:28,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:13:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-04 16:13:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 16:13:28,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:28,391 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] [2020-09-04 16:13:28,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:13:28,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-04 16:13:28,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:28,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247437986] [2020-09-04 16:13:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:28,395 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:13:28,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247437986] [2020-09-04 16:13:28,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:28,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:13:28,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608489953] [2020-09-04 16:13:28,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:13:28,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:28,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:13:28,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:13:28,663 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 11 states. [2020-09-04 16:13:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:28,898 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-09-04 16:13:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 16:13:28,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-04 16:13:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:28,900 INFO L225 Difference]: With dead ends: 42 [2020-09-04 16:13:28,900 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 16:13:28,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-04 16:13:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 16:13:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-04 16:13:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 16:13:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-04 16:13:28,911 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 35 [2020-09-04 16:13:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:28,911 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-04 16:13:28,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:13:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-04 16:13:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:13:28,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:28,913 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] [2020-09-04 16:13:28,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:13:28,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:28,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1069340361, now seen corresponding path program 3 times [2020-09-04 16:13:28,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:28,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182300789] [2020-09-04 16:13:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:28,917 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 16:13:29,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182300789] [2020-09-04 16:13:29,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:29,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:13:29,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271376024] [2020-09-04 16:13:29,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:13:29,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:13:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:13:29,210 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2020-09-04 16:13:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:29,546 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 16:13:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 16:13:29,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-09-04 16:13:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:29,548 INFO L225 Difference]: With dead ends: 47 [2020-09-04 16:13:29,548 INFO L226 Difference]: Without dead ends: 41 [2020-09-04 16:13:29,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:13:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-04 16:13:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-04 16:13:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 16:13:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-09-04 16:13:29,559 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 43 [2020-09-04 16:13:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:29,559 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-09-04 16:13:29,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:13:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-09-04 16:13:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 16:13:29,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:29,562 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] [2020-09-04 16:13:29,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:13:29,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash -287672703, now seen corresponding path program 4 times [2020-09-04 16:13:29,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:29,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486751363] [2020-09-04 16:13:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:29,565 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 16:13:29,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486751363] [2020-09-04 16:13:29,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:29,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 16:13:29,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649527718] [2020-09-04 16:13:29,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 16:13:29,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:29,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 16:13:29,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:13:29,897 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 15 states. [2020-09-04 16:13:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:30,389 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-09-04 16:13:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 16:13:30,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-04 16:13:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:30,393 INFO L225 Difference]: With dead ends: 52 [2020-09-04 16:13:30,394 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 16:13:30,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-09-04 16:13:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 16:13:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 16:13:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 16:13:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-04 16:13:30,417 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 51 [2020-09-04 16:13:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:30,417 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-04 16:13:30,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 16:13:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-04 16:13:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 16:13:30,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:30,419 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] [2020-09-04 16:13:30,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:13:30,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:30,423 INFO L82 PathProgramCache]: Analyzing trace with hash 389514871, now seen corresponding path program 5 times [2020-09-04 16:13:30,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:30,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209925503] [2020-09-04 16:13:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:30,425 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 16:13:30,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209925503] [2020-09-04 16:13:30,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:30,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:13:30,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184590899] [2020-09-04 16:13:30,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:13:30,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:30,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:13:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:13:30,748 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 17 states. [2020-09-04 16:13:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:31,376 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-09-04 16:13:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 16:13:31,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-09-04 16:13:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:31,378 INFO L225 Difference]: With dead ends: 57 [2020-09-04 16:13:31,378 INFO L226 Difference]: Without dead ends: 51 [2020-09-04 16:13:31,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 16:13:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-04 16:13:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-04 16:13:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 16:13:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-04 16:13:31,398 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 59 [2020-09-04 16:13:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:31,399 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-04 16:13:31,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:13:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-04 16:13:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-04 16:13:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:31,405 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] [2020-09-04 16:13:31,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:13:31,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1451925313, now seen corresponding path program 6 times [2020-09-04 16:13:31,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:31,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301129543] [2020-09-04 16:13:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:31,411 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-04 16:13:31,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301129543] [2020-09-04 16:13:31,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:31,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 16:13:31,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443105963] [2020-09-04 16:13:31,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 16:13:31,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:31,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 16:13:31,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:13:31,837 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 19 states. [2020-09-04 16:13:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:32,649 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-09-04 16:13:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 16:13:32,649 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-09-04 16:13:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:32,651 INFO L225 Difference]: With dead ends: 62 [2020-09-04 16:13:32,651 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 16:13:32,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 16:13:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 16:13:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-04 16:13:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 16:13:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-09-04 16:13:32,664 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 67 [2020-09-04 16:13:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:32,664 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-09-04 16:13:32,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 16:13:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-09-04 16:13:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-04 16:13:32,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:32,666 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] [2020-09-04 16:13:32,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:13:32,667 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2078207049, now seen corresponding path program 7 times [2020-09-04 16:13:32,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:32,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757180732] [2020-09-04 16:13:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:32,669 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 16:13:33,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757180732] [2020-09-04 16:13:33,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:33,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 16:13:33,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487596593] [2020-09-04 16:13:33,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 16:13:33,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:33,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 16:13:33,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-04 16:13:33,198 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 21 states. [2020-09-04 16:13:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:34,041 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-04 16:13:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 16:13:34,041 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-09-04 16:13:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:34,047 INFO L225 Difference]: With dead ends: 67 [2020-09-04 16:13:34,048 INFO L226 Difference]: Without dead ends: 61 [2020-09-04 16:13:34,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:13:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-04 16:13:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-04 16:13:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 16:13:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-04 16:13:34,069 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 75 [2020-09-04 16:13:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:34,070 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-04 16:13:34,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 16:13:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-04 16:13:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 16:13:34,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:34,071 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] [2020-09-04 16:13:34,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:13:34,072 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:34,072 INFO L82 PathProgramCache]: Analyzing trace with hash 768055297, now seen corresponding path program 8 times [2020-09-04 16:13:34,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:34,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375029427] [2020-09-04 16:13:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:34,075 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-04 16:13:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375029427] [2020-09-04 16:13:34,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:34,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:13:34,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056798016] [2020-09-04 16:13:34,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:13:34,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:34,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:13:34,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:13:34,714 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 23 states. [2020-09-04 16:13:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:35,901 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2020-09-04 16:13:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 16:13:35,902 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-04 16:13:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:35,904 INFO L225 Difference]: With dead ends: 72 [2020-09-04 16:13:35,905 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 16:13:35,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=2272, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 16:13:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 16:13:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 16:13:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 16:13:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-04 16:13:35,927 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 83 [2020-09-04 16:13:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:35,927 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-04 16:13:35,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:13:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-04 16:13:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-04 16:13:35,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:35,930 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] [2020-09-04 16:13:35,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:13:35,931 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1891881207, now seen corresponding path program 9 times [2020-09-04 16:13:35,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:35,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834273441] [2020-09-04 16:13:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:35,933 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-04 16:13:36,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834273441] [2020-09-04 16:13:36,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:36,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-04 16:13:36,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029036368] [2020-09-04 16:13:36,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 16:13:36,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 16:13:36,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:13:36,672 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 25 states. [2020-09-04 16:13:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:38,126 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-09-04 16:13:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 16:13:38,127 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 91 [2020-09-04 16:13:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:38,128 INFO L225 Difference]: With dead ends: 77 [2020-09-04 16:13:38,128 INFO L226 Difference]: Without dead ends: 71 [2020-09-04 16:13:38,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 16:13:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-04 16:13:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-04 16:13:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-04 16:13:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-04 16:13:38,142 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 91 [2020-09-04 16:13:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:38,143 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-04 16:13:38,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 16:13:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-04 16:13:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-04 16:13:38,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:38,144 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] [2020-09-04 16:13:38,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:13:38,145 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2102223041, now seen corresponding path program 10 times [2020-09-04 16:13:38,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:38,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225554306] [2020-09-04 16:13:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:38,147 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-04 16:13:38,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225554306] [2020-09-04 16:13:38,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:38,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-04 16:13:38,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430283615] [2020-09-04 16:13:38,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 16:13:38,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 16:13:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:13:39,000 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 27 states. [2020-09-04 16:13:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:40,601 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-09-04 16:13:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 16:13:40,602 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 99 [2020-09-04 16:13:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:40,605 INFO L225 Difference]: With dead ends: 82 [2020-09-04 16:13:40,605 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 16:13:40,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=3324, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 16:13:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 16:13:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-04 16:13:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 16:13:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-09-04 16:13:40,620 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 99 [2020-09-04 16:13:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:40,620 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-09-04 16:13:40,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 16:13:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-09-04 16:13:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-04 16:13:40,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:40,622 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] [2020-09-04 16:13:40,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:13:40,622 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:40,623 INFO L82 PathProgramCache]: Analyzing trace with hash -505168329, now seen corresponding path program 11 times [2020-09-04 16:13:40,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:40,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439434529] [2020-09-04 16:13:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:40,625 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-04 16:13:41,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439434529] [2020-09-04 16:13:41,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:41,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-09-04 16:13:41,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557921784] [2020-09-04 16:13:41,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 16:13:41,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:41,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 16:13:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-09-04 16:13:41,543 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 29 states. [2020-09-04 16:13:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:43,532 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-04 16:13:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 16:13:43,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 107 [2020-09-04 16:13:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:43,535 INFO L225 Difference]: With dead ends: 87 [2020-09-04 16:13:43,535 INFO L226 Difference]: Without dead ends: 81 [2020-09-04 16:13:43,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=235, Invalid=3925, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 16:13:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-04 16:13:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-04 16:13:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-04 16:13:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-04 16:13:43,548 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 107 [2020-09-04 16:13:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:43,548 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-04 16:13:43,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 16:13:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-04 16:13:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-04 16:13:43,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:43,550 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] [2020-09-04 16:13:43,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:13:43,550 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1831339647, now seen corresponding path program 12 times [2020-09-04 16:13:43,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:43,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631608589] [2020-09-04 16:13:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:43,553 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-04 16:13:44,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631608589] [2020-09-04 16:13:44,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:44,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-09-04 16:13:44,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188619674] [2020-09-04 16:13:44,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 16:13:44,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 16:13:44,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-09-04 16:13:44,701 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 31 states. [2020-09-04 16:13:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:47,028 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-09-04 16:13:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-04 16:13:47,029 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 115 [2020-09-04 16:13:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:47,030 INFO L225 Difference]: With dead ends: 92 [2020-09-04 16:13:47,030 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 16:13:47,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=254, Invalid=4576, Unknown=0, NotChecked=0, Total=4830 [2020-09-04 16:13:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 16:13:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-04 16:13:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 16:13:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-09-04 16:13:47,045 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 115 [2020-09-04 16:13:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:47,045 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-09-04 16:13:47,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 16:13:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-09-04 16:13:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-04 16:13:47,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:47,047 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] [2020-09-04 16:13:47,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:13:47,047 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1220224137, now seen corresponding path program 13 times [2020-09-04 16:13:47,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:47,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384469392] [2020-09-04 16:13:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:47,050 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-04 16:13:48,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384469392] [2020-09-04 16:13:48,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:48,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-09-04 16:13:48,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389759213] [2020-09-04 16:13:48,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 16:13:48,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 16:13:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:13:48,242 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 33 states. [2020-09-04 16:13:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:50,977 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-09-04 16:13:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 16:13:50,978 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 123 [2020-09-04 16:13:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:50,979 INFO L225 Difference]: With dead ends: 97 [2020-09-04 16:13:50,979 INFO L226 Difference]: Without dead ends: 91 [2020-09-04 16:13:50,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=273, Invalid=5277, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 16:13:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-04 16:13:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-09-04 16:13:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-04 16:13:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-09-04 16:13:50,993 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 123 [2020-09-04 16:13:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:50,993 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-09-04 16:13:50,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 16:13:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-09-04 16:13:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-04 16:13:50,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:50,995 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] [2020-09-04 16:13:50,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:13:50,995 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1054645695, now seen corresponding path program 14 times [2020-09-04 16:13:50,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:50,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301534205] [2020-09-04 16:13:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:50,998 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-04 16:13:52,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301534205] [2020-09-04 16:13:52,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:52,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-04 16:13:52,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257199491] [2020-09-04 16:13:52,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 16:13:52,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:52,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 16:13:52,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 16:13:52,501 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 35 states. [2020-09-04 16:13:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:55,505 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2020-09-04 16:13:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-04 16:13:55,506 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 131 [2020-09-04 16:13:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:55,508 INFO L225 Difference]: With dead ends: 102 [2020-09-04 16:13:55,508 INFO L226 Difference]: Without dead ends: 96 [2020-09-04 16:13:55,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2020-09-04 16:13:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-04 16:13:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-04 16:13:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-04 16:13:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-09-04 16:13:55,530 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 131 [2020-09-04 16:13:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:55,531 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-09-04 16:13:55,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 16:13:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-09-04 16:13:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-04 16:13:55,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:55,533 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] [2020-09-04 16:13:55,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:13:55,534 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -341104457, now seen corresponding path program 15 times [2020-09-04 16:13:55,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:55,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898307201] [2020-09-04 16:13:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:55,536 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:55,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-09-04 16:13:57,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898307201] [2020-09-04 16:13:57,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:57,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-09-04 16:13:57,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911771857] [2020-09-04 16:13:57,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 16:13:57,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 16:13:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 16:13:57,173 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 37 states. [2020-09-04 16:14:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:00,610 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-09-04 16:14:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-04 16:14:00,610 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 139 [2020-09-04 16:14:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:00,614 INFO L225 Difference]: With dead ends: 107 [2020-09-04 16:14:00,614 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 16:14:00,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=311, Invalid=6829, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 16:14:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 16:14:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-04 16:14:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 16:14:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-09-04 16:14:00,631 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 139 [2020-09-04 16:14:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:00,633 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-09-04 16:14:00,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 16:14:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-09-04 16:14:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-04 16:14:00,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:00,634 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] [2020-09-04 16:14:00,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:14:00,635 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 535534337, now seen corresponding path program 16 times [2020-09-04 16:14:00,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:00,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161924900] [2020-09-04 16:14:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:00,637 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-09-04 16:14:02,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161924900] [2020-09-04 16:14:02,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:02,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 16:14:02,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815275106] [2020-09-04 16:14:02,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 16:14:02,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:02,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 16:14:02,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:14:02,413 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 39 states. [2020-09-04 16:14:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:06,367 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-09-04 16:14:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-09-04 16:14:06,368 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 147 [2020-09-04 16:14:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:06,370 INFO L225 Difference]: With dead ends: 112 [2020-09-04 16:14:06,371 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 16:14:06,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=330, Invalid=7680, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 16:14:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 16:14:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-04 16:14:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 16:14:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-04 16:14:06,389 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 147 [2020-09-04 16:14:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:06,389 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-04 16:14:06,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 16:14:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-04 16:14:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-04 16:14:06,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:06,390 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] [2020-09-04 16:14:06,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 16:14:06,391 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:06,391 INFO L82 PathProgramCache]: Analyzing trace with hash -723868169, now seen corresponding path program 17 times [2020-09-04 16:14:06,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:06,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542115872] [2020-09-04 16:14:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:06,393 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-09-04 16:14:08,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542115872] [2020-09-04 16:14:08,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:08,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-09-04 16:14:08,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012834777] [2020-09-04 16:14:08,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 16:14:08,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:08,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 16:14:08,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 16:14:08,392 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 41 states. [2020-09-04 16:14:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:12,804 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-09-04 16:14:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-09-04 16:14:12,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 155 [2020-09-04 16:14:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:12,806 INFO L225 Difference]: With dead ends: 117 [2020-09-04 16:14:12,807 INFO L226 Difference]: Without dead ends: 111 [2020-09-04 16:14:12,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=349, Invalid=8581, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 16:14:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-04 16:14:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-09-04 16:14:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-04 16:14:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-09-04 16:14:12,822 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 155 [2020-09-04 16:14:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:12,823 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-09-04 16:14:12,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 16:14:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-09-04 16:14:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 16:14:12,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:12,824 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] [2020-09-04 16:14:12,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 16:14:12,825 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:12,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1273799617, now seen corresponding path program 18 times [2020-09-04 16:14:12,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:12,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535941242] [2020-09-04 16:14:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:12,827 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-09-04 16:14:15,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535941242] [2020-09-04 16:14:15,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:15,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-09-04 16:14:15,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813191023] [2020-09-04 16:14:15,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 16:14:15,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 16:14:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 16:14:15,018 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 43 states. [2020-09-04 16:14:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:19,819 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-09-04 16:14:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-04 16:14:19,821 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 163 [2020-09-04 16:14:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:19,823 INFO L225 Difference]: With dead ends: 122 [2020-09-04 16:14:19,823 INFO L226 Difference]: Without dead ends: 116 [2020-09-04 16:14:19,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=368, Invalid=9532, Unknown=0, NotChecked=0, Total=9900 [2020-09-04 16:14:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-04 16:14:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-04 16:14:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-04 16:14:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2020-09-04 16:14:19,840 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 163 [2020-09-04 16:14:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:19,840 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2020-09-04 16:14:19,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 16:14:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2020-09-04 16:14:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 16:14:19,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:19,842 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] [2020-09-04 16:14:19,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 16:14:19,843 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1670861623, now seen corresponding path program 19 times [2020-09-04 16:14:19,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:19,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936158916] [2020-09-04 16:14:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:19,845 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-09-04 16:14:22,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936158916] [2020-09-04 16:14:22,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:22,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-09-04 16:14:22,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376237391] [2020-09-04 16:14:22,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 16:14:22,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 16:14:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:14:22,305 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 45 states. [2020-09-04 16:14:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:27,819 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-09-04 16:14:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-04 16:14:27,820 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 171 [2020-09-04 16:14:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:27,822 INFO L225 Difference]: With dead ends: 127 [2020-09-04 16:14:27,823 INFO L226 Difference]: Without dead ends: 121 [2020-09-04 16:14:27,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=387, Invalid=10533, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 16:14:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-04 16:14:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-09-04 16:14:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-04 16:14:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-09-04 16:14:27,842 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 171 [2020-09-04 16:14:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:27,842 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-09-04 16:14:27,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 16:14:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-09-04 16:14:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-04 16:14:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:27,844 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] [2020-09-04 16:14:27,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 16:14:27,844 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash 652377217, now seen corresponding path program 20 times [2020-09-04 16:14:27,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:27,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643292476] [2020-09-04 16:14:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:27,847 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-09-04 16:14:30,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643292476] [2020-09-04 16:14:30,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:30,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-09-04 16:14:30,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199778609] [2020-09-04 16:14:30,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 16:14:30,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:30,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 16:14:30,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 16:14:30,539 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 47 states. [2020-09-04 16:14:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:36,664 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2020-09-04 16:14:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-09-04 16:14:36,665 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 179 [2020-09-04 16:14:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:36,667 INFO L225 Difference]: With dead ends: 132 [2020-09-04 16:14:36,667 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 16:14:36,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1993 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=406, Invalid=11584, Unknown=0, NotChecked=0, Total=11990 [2020-09-04 16:14:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 16:14:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-04 16:14:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 16:14:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-09-04 16:14:36,686 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 179 [2020-09-04 16:14:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:36,686 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-09-04 16:14:36,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 16:14:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-09-04 16:14:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-04 16:14:36,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:36,688 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] [2020-09-04 16:14:36,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 16:14:36,689 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1671770231, now seen corresponding path program 21 times [2020-09-04 16:14:36,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:36,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592828958] [2020-09-04 16:14:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:36,691 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:38,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-09-04 16:14:39,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592828958] [2020-09-04 16:14:39,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:39,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-09-04 16:14:39,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256388053] [2020-09-04 16:14:39,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 16:14:39,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:39,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 16:14:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 16:14:39,746 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 49 states. [2020-09-04 16:14:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:46,550 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-09-04 16:14:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-09-04 16:14:46,551 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 187 [2020-09-04 16:14:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:46,554 INFO L225 Difference]: With dead ends: 137 [2020-09-04 16:14:46,554 INFO L226 Difference]: Without dead ends: 131 [2020-09-04 16:14:46,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=425, Invalid=12685, Unknown=0, NotChecked=0, Total=13110 [2020-09-04 16:14:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-04 16:14:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-09-04 16:14:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-04 16:14:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-09-04 16:14:46,574 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 187 [2020-09-04 16:14:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-09-04 16:14:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 16:14:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-09-04 16:14:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 16:14:46,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:46,576 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] [2020-09-04 16:14:46,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 16:14:46,576 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1752619711, now seen corresponding path program 22 times [2020-09-04 16:14:46,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:46,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771044991] [2020-09-04 16:14:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:46,579 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-09-04 16:14:49,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771044991] [2020-09-04 16:14:49,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:14:49,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-09-04 16:14:49,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076806782] [2020-09-04 16:14:49,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 16:14:49,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:14:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 16:14:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 16:14:49,922 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 51 states. [2020-09-04 16:14:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:14:57,429 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2020-09-04 16:14:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-09-04 16:14:57,430 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 195 [2020-09-04 16:14:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:14:57,432 INFO L225 Difference]: With dead ends: 142 [2020-09-04 16:14:57,432 INFO L226 Difference]: Without dead ends: 136 [2020-09-04 16:14:57,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=444, Invalid=13836, Unknown=0, NotChecked=0, Total=14280 [2020-09-04 16:14:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-04 16:14:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-04 16:14:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-04 16:14:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-09-04 16:14:57,450 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 195 [2020-09-04 16:14:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:14:57,450 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-09-04 16:14:57,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 16:14:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-09-04 16:14:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-04 16:14:57,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:14:57,452 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] [2020-09-04 16:14:57,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 16:14:57,452 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:14:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:14:57,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1144504905, now seen corresponding path program 23 times [2020-09-04 16:14:57,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:14:57,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509833534] [2020-09-04 16:14:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:14:57,454 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:14:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:14:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:14:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:14:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:14:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-09-04 16:15:01,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509833534] [2020-09-04 16:15:01,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:15:01,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-09-04 16:15:01,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946564655] [2020-09-04 16:15:01,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 16:15:01,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:15:01,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 16:15:01,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 16:15:01,066 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 53 states. [2020-09-04 16:15:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:15:09,367 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-09-04 16:15:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-09-04 16:15:09,369 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 203 [2020-09-04 16:15:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:15:09,370 INFO L225 Difference]: With dead ends: 147 [2020-09-04 16:15:09,370 INFO L226 Difference]: Without dead ends: 141 [2020-09-04 16:15:09,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2602 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=463, Invalid=15037, Unknown=0, NotChecked=0, Total=15500 [2020-09-04 16:15:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-04 16:15:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-09-04 16:15:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-04 16:15:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-09-04 16:15:09,393 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 203 [2020-09-04 16:15:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:15:09,394 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-09-04 16:15:09,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 16:15:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-09-04 16:15:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-04 16:15:09,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:15:09,395 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] [2020-09-04 16:15:09,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 16:15:09,396 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:15:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:15:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1235000833, now seen corresponding path program 24 times [2020-09-04 16:15:09,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:15:09,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799908546] [2020-09-04 16:15:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:15:09,398 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:15:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:15:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:15:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:12,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-09-04 16:15:13,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799908546] [2020-09-04 16:15:13,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:15:13,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-09-04 16:15:13,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783689544] [2020-09-04 16:15:13,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 16:15:13,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:15:13,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 16:15:13,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 16:15:13,340 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 55 states. [2020-09-04 16:15:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:15:22,392 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2020-09-04 16:15:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-09-04 16:15:22,399 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 211 [2020-09-04 16:15:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:15:22,401 INFO L225 Difference]: With dead ends: 152 [2020-09-04 16:15:22,401 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 16:15:22,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=482, Invalid=16288, Unknown=0, NotChecked=0, Total=16770 [2020-09-04 16:15:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 16:15:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-04 16:15:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 16:15:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-09-04 16:15:22,422 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 211 [2020-09-04 16:15:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:15:22,422 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-09-04 16:15:22,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 16:15:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-09-04 16:15:22,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 16:15:22,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:15:22,424 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] [2020-09-04 16:15:22,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 16:15:22,424 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:15:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:15:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1379632393, now seen corresponding path program 25 times [2020-09-04 16:15:22,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:15:22,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330927074] [2020-09-04 16:15:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:15:22,427 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:15:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:15:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:15:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-09-04 16:15:26,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330927074] [2020-09-04 16:15:26,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:15:26,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-09-04 16:15:26,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485698160] [2020-09-04 16:15:26,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 16:15:26,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:15:26,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 16:15:26,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 16:15:26,790 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 57 states. [2020-09-04 16:15:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:15:36,795 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-09-04 16:15:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-09-04 16:15:36,796 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 219 [2020-09-04 16:15:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:15:36,799 INFO L225 Difference]: With dead ends: 157 [2020-09-04 16:15:36,799 INFO L226 Difference]: Without dead ends: 151 [2020-09-04 16:15:36,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=501, Invalid=17589, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 16:15:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-04 16:15:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-09-04 16:15:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-04 16:15:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-09-04 16:15:36,822 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 219 [2020-09-04 16:15:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:15:36,823 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-09-04 16:15:36,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 16:15:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-09-04 16:15:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-04 16:15:36,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:15:36,824 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] [2020-09-04 16:15:36,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 16:15:36,825 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:15:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:15:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1842931393, now seen corresponding path program 26 times [2020-09-04 16:15:36,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:15:36,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166345347] [2020-09-04 16:15:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:15:36,827 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:15:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:36,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:15:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:15:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:39,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-09-04 16:15:41,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166345347] [2020-09-04 16:15:41,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:15:41,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-09-04 16:15:41,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840282337] [2020-09-04 16:15:41,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 16:15:41,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:15:41,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 16:15:41,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 16:15:41,388 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 59 states. [2020-09-04 16:15:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:15:52,261 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2020-09-04 16:15:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-09-04 16:15:52,262 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 227 [2020-09-04 16:15:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:15:52,264 INFO L225 Difference]: With dead ends: 162 [2020-09-04 16:15:52,264 INFO L226 Difference]: Without dead ends: 156 [2020-09-04 16:15:52,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3292 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=520, Invalid=18940, Unknown=0, NotChecked=0, Total=19460 [2020-09-04 16:15:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-04 16:15:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-09-04 16:15:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-04 16:15:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2020-09-04 16:15:52,287 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 227 [2020-09-04 16:15:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:15:52,287 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2020-09-04 16:15:52,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 16:15:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2020-09-04 16:15:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-04 16:15:52,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:15:52,289 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] [2020-09-04 16:15:52,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 16:15:52,290 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:15:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:15:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash 375253047, now seen corresponding path program 27 times [2020-09-04 16:15:52,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:15:52,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49285685] [2020-09-04 16:15:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:15:52,291 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:15:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:15:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:15:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:53,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:55,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:15:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:15:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-09-04 16:15:58,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49285685] [2020-09-04 16:15:58,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:15:58,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-09-04 16:15:58,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361239220] [2020-09-04 16:15:58,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 16:15:58,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:15:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 16:15:58,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 16:15:58,020 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 61 states. [2020-09-04 16:16:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:16:10,024 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-09-04 16:16:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-09-04 16:16:10,025 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 235 [2020-09-04 16:16:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:16:10,027 INFO L225 Difference]: With dead ends: 167 [2020-09-04 16:16:10,027 INFO L226 Difference]: Without dead ends: 161 [2020-09-04 16:16:10,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=539, Invalid=20341, Unknown=0, NotChecked=0, Total=20880 [2020-09-04 16:16:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-04 16:16:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-09-04 16:16:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-04 16:16:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2020-09-04 16:16:10,056 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 235 [2020-09-04 16:16:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:16:10,056 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2020-09-04 16:16:10,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 16:16:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2020-09-04 16:16:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-04 16:16:10,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:16:10,058 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] [2020-09-04 16:16:10,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 16:16:10,059 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:16:10,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:16:10,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2046427009, now seen corresponding path program 28 times [2020-09-04 16:16:10,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:16:10,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343788182] [2020-09-04 16:16:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:16:10,061 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:16:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:16:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:16:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:14,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-09-04 16:16:15,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343788182] [2020-09-04 16:16:15,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:16:15,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-09-04 16:16:15,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583097454] [2020-09-04 16:16:15,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 16:16:15,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:16:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 16:16:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 16:16:15,893 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 63 states. [2020-09-04 16:16:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:16:29,463 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2020-09-04 16:16:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-09-04 16:16:29,465 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 243 [2020-09-04 16:16:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:16:29,467 INFO L225 Difference]: With dead ends: 172 [2020-09-04 16:16:29,467 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 16:16:29,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=558, Invalid=21792, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 16:16:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 16:16:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-04 16:16:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 16:16:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-09-04 16:16:29,495 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 243 [2020-09-04 16:16:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:16:29,495 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-09-04 16:16:29,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 16:16:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-09-04 16:16:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-04 16:16:29,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:16:29,497 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] [2020-09-04 16:16:29,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 16:16:29,497 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:16:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:16:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1386707593, now seen corresponding path program 29 times [2020-09-04 16:16:29,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:16:29,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738303300] [2020-09-04 16:16:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:16:29,499 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:16:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:16:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:16:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-09-04 16:16:36,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738303300] [2020-09-04 16:16:36,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:16:36,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-09-04 16:16:36,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196460478] [2020-09-04 16:16:36,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 16:16:36,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:16:36,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 16:16:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 16:16:36,033 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 65 states. [2020-09-04 16:16:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:16:53,489 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-09-04 16:16:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-09-04 16:16:53,491 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 251 [2020-09-04 16:16:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:16:53,493 INFO L225 Difference]: With dead ends: 177 [2020-09-04 16:16:53,493 INFO L226 Difference]: Without dead ends: 171 [2020-09-04 16:16:53,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=577, Invalid=23293, Unknown=0, NotChecked=0, Total=23870 [2020-09-04 16:16:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-04 16:16:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-04 16:16:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-04 16:16:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-09-04 16:16:53,526 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 251 [2020-09-04 16:16:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:16:53,527 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-09-04 16:16:53,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 16:16:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-09-04 16:16:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-04 16:16:53,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:16:53,529 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] [2020-09-04 16:16:53,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 16:16:53,529 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:16:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:16:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash -390338495, now seen corresponding path program 30 times [2020-09-04 16:16:53,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:16:53,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224448940] [2020-09-04 16:16:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:16:53,532 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:16:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:16:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:53,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:16:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:55,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:56,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:57,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:58,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:59,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:16:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:16:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:17:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-09-04 16:17:00,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224448940] [2020-09-04 16:17:00,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:17:00,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2020-09-04 16:17:00,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035833422] [2020-09-04 16:17:00,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-09-04 16:17:00,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:17:00,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-09-04 16:17:00,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=3320, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 16:17:00,036 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 66 states. [2020-09-04 16:17:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:17:03,989 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-04 16:17:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-09-04 16:17:03,989 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 259 [2020-09-04 16:17:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:17:03,990 INFO L225 Difference]: With dead ends: 171 [2020-09-04 16:17:03,990 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:17:03,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2352, Invalid=7350, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 16:17:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:17:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:17:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:17:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:17:03,993 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2020-09-04 16:17:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:17:03,993 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:17:03,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-09-04 16:17:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:17:03,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:17:03,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 16:17:03,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:17:04,573 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 1402 [2020-09-04 16:17:07,134 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 1837 DAG size of output: 127 [2020-09-04 16:17:07,701 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1369 [2020-09-04 16:17:09,743 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 1775 DAG size of output: 126 [2020-09-04 16:17:10,224 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 1402 [2020-09-04 16:17:12,609 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 1837 DAG size of output: 127 [2020-09-04 16:17:13,083 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1369 [2020-09-04 16:17:15,094 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 1775 DAG size of output: 126 [2020-09-04 16:17:16,571 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 2622 [2020-09-04 16:17:22,330 WARN L193 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 3057 DAG size of output: 215 [2020-09-04 16:17:22,929 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 1433 DAG size of output: 17 [2020-09-04 16:17:23,109 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 6 [2020-09-04 16:17:23,245 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-09-04 16:17:23,382 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-09-04 16:17:23,947 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 1399 DAG size of output: 19 [2020-09-04 16:17:24,487 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 1433 DAG size of output: 17 [2020-09-04 16:17:24,617 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 3 [2020-09-04 16:17:25,151 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 1399 DAG size of output: 19 [2020-09-04 16:17:26,251 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 2653 DAG size of output: 28 [2020-09-04 16:17:26,256 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,257 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,257 INFO L264 CegarLoopResult]: At program point L17(lines 17 19) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-09-04 16:17:26,257 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| 2) .cse0 (= |hanoi_#t~ret0| 1) (<= 3 |hanoi_#res|)) (and .cse0 (<= 1073741823 |hanoi_#t~ret0|) (<= 2147483647 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret0|) .cse0 (<= 7 |hanoi_#res|) (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|)) (<= (+ |hanoi_#in~n| 4) |hanoi_#res|)))) [2020-09-04 16:17:26,258 INFO L264 CegarLoopResult]: At program point hanoiEXIT(lines 16 21) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and .cse0 (<= 2147483647 |hanoi_#res|)) (and .cse0 (<= (+ |hanoi_#in~n| 1) |hanoi_#res|) (<= 3 |hanoi_#res|)) (and (= |hanoi_#in~n| 1) .cse0 (= |hanoi_#res| 1)))) [2020-09-04 16:17:26,258 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-09-04 16:17:26,258 INFO L264 CegarLoopResult]: At program point hanoiFINAL(lines 16 21) the Hoare annotation is: (let ((.cse0 (= hanoi_~n |hanoi_#in~n|))) (or (and .cse0 (<= 2147483647 |hanoi_#res|)) (and .cse0 (<= (+ |hanoi_#in~n| 1) |hanoi_#res|) (<= 3 |hanoi_#res|)) (and (= |hanoi_#in~n| 1) .cse0 (= |hanoi_#res| 1)))) [2020-09-04 16:17:26,258 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-09-04 16:17:26,259 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 (= |hanoi_#t~ret0| 1)) (and (<= 3 |hanoi_#t~ret0|) .cse0 (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|))) (and .cse0 (<= 1073741823 |hanoi_#t~ret0|)))) [2020-09-04 16:17:26,259 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |hanoi_#in~n| 1) (= hanoi_~n |hanoi_#in~n|)) [2020-09-04 16:17:26,259 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 (= |hanoi_#t~ret0| 1)) (and (<= 3 |hanoi_#t~ret0|) .cse0 (<= (+ |hanoi_#in~n| 3) (* 2 |hanoi_#t~ret0|))) (and .cse0 (<= 1073741823 |hanoi_#t~ret0|)))) [2020-09-04 16:17:26,259 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,260 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,260 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,260 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) the Hoare annotation is: false [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= main_~n~0 main_~result~0) [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point L30(lines 30 34) the Hoare annotation is: (<= main_~n~0 main_~result~0) [2020-09-04 16:17:26,260 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-09-04 16:17:26,260 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (<= main_~n~0 |main_#t~ret2|) [2020-09-04 16:17:26,260 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-09-04 16:17:26,261 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (<= main_~n~0 |main_#t~ret2|) [2020-09-04 16:17:26,261 INFO L271 CegarLoopResult]: At program point L26(lines 26 28) the Hoare annotation is: true [2020-09-04 16:17:26,261 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)) [2020-09-04 16:17:26,261 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-09-04 16:17:26,261 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2020-09-04 16:17:26,261 INFO L271 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-09-04 16:17:26,261 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2020-09-04 16:17:26,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:17:26 BoogieIcfgContainer [2020-09-04 16:17:26,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:17:26,288 INFO L168 Benchmark]: Toolchain (without parser) took 239752.58 ms. Allocated memory was 141.0 MB in the beginning and 928.0 MB in the end (delta: 787.0 MB). Free memory was 105.3 MB in the beginning and 245.9 MB in the end (delta: -140.5 MB). Peak memory consumption was 860.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:17:26,289 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:17:26,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 141.0 MB. Free memory was 105.1 MB in the beginning and 95.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:17:26,290 INFO L168 Benchmark]: Boogie Preprocessor took 33.20 ms. Allocated memory is still 141.0 MB. Free memory was 95.8 MB in the beginning and 94.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:17:26,290 INFO L168 Benchmark]: RCFGBuilder took 364.31 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 172.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:17:26,291 INFO L168 Benchmark]: TraceAbstraction took 239059.43 ms. Allocated memory was 205.0 MB in the beginning and 928.0 MB in the end (delta: 723.0 MB). Free memory was 171.6 MB in the beginning and 245.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 863.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:17:26,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 141.0 MB. Free memory was 105.1 MB in the beginning and 95.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.20 ms. Allocated memory is still 141.0 MB. Free memory was 95.8 MB in the beginning and 94.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.31 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 172.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239059.43 ms. Allocated memory was 205.0 MB in the beginning and 928.0 MB in the end (delta: 723.0 MB). Free memory was 171.6 MB in the beginning and 245.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 863.1 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: ((n == \old(n) && 2147483647 <= \result) || ((n == \old(n) && \old(n) + 1 <= \result) && 3 <= \result)) || ((\old(n) == 1 && n == \old(n)) && \result == 1) - 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: 216.6s, OverallIterations: 31, TraceHistogramMax: 31, AutomataDifference: 145.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 22.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1469 SDtfs, 2513 SDslu, 40689 SDs, 0 SdLazy, 73981 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3598 GetRequests, 1086 SyntacticMatches, 0 SemanticMatches, 2512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43766 ImplicationChecksByTransitivity, 117.1s 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, 18.3s HoareSimplificationTime, 30 FomulaSimplificationsInter, 20979 FormulaSimplificationTreeSizeReductionInter, 3.8s 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...