/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:53:18,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:53:18,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:53:18,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:53:18,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:53:18,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:53:18,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:53:18,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:53:18,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:53:18,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:53:18,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:53:18,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:53:18,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:53:18,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:53:18,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:53:18,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:53:18,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:53:18,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:53:18,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:53:18,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:53:18,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:53:18,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:53:18,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:53:18,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:53:18,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:53:18,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:53:18,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:53:18,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:53:18,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:53:18,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:53:18,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:53:18,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:53:18,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:53:18,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:53:18,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:53:18,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:53:18,604 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:53:18,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:53:18,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:53:18,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:53:18,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:53:18,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:53:18,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:53:18,606 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:53:19,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:53:19,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:53:19,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:53:19,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:53:19,054 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:53:19,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-10-24 00:53:19,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f50c44f/fe05a82a6b0a44b5af0b5664923c843b/FLAG8b103d163 [2020-10-24 00:53:19,802 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:53:19,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-10-24 00:53:19,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f50c44f/fe05a82a6b0a44b5af0b5664923c843b/FLAG8b103d163 [2020-10-24 00:53:20,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f50c44f/fe05a82a6b0a44b5af0b5664923c843b [2020-10-24 00:53:20,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:53:20,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:53:20,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:53:20,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:53:20,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:53:20,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea6774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20, skipping insertion in model container [2020-10-24 00:53:20,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:53:20,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:53:20,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:53:20,406 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:53:20,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:53:20,446 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:53:20,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20 WrapperNode [2020-10-24 00:53:20,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:53:20,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:53:20,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:53:20,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:53:20,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... [2020-10-24 00:53:20,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:53:20,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:53:20,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:53:20,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:53:20,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:53:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:53:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:53:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:53:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-24 00:53:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-24 00:53:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:53:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 00:53:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:53:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:53:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:53:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:53:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-24 00:53:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-24 00:53:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:53:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:53:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:53:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:53:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:53:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:53:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:53:20,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:53:20,957 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:53:20,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:20 BoogieIcfgContainer [2020-10-24 00:53:20,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:53:20,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:53:20,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:53:20,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:53:20,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:53:20" (1/3) ... [2020-10-24 00:53:20,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d769bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:20, skipping insertion in model container [2020-10-24 00:53:20,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:20" (2/3) ... [2020-10-24 00:53:20,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d769bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:20, skipping insertion in model container [2020-10-24 00:53:20,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:20" (3/3) ... [2020-10-24 00:53:20,969 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-10-24 00:53:20,984 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:53:20,990 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:53:21,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:53:21,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:53:21,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:53:21,102 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:53:21,103 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:53:21,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:53:21,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:53:21,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:53:21,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:53:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-24 00:53:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 00:53:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:21,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:21,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash 775886402, now seen corresponding path program 1 times [2020-10-24 00:53:21,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:21,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65305275] [2020-10-24 00:53:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:53:21,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65305275] [2020-10-24 00:53:21,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:53:21,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:53:21,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909049471] [2020-10-24 00:53:21,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:53:21,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:21,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:53:21,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:53:21,734 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 6 states. [2020-10-24 00:53:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:22,279 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-24 00:53:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:53:22,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-24 00:53:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:22,294 INFO L225 Difference]: With dead ends: 74 [2020-10-24 00:53:22,294 INFO L226 Difference]: Without dead ends: 51 [2020-10-24 00:53:22,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-24 00:53:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-24 00:53:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 00:53:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-24 00:53:22,368 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 25 [2020-10-24 00:53:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:22,368 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-24 00:53:22,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:53:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-24 00:53:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 00:53:22,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:22,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:22,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:53:22,372 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:22,373 INFO L82 PathProgramCache]: Analyzing trace with hash 478831265, now seen corresponding path program 1 times [2020-10-24 00:53:22,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:22,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135589199] [2020-10-24 00:53:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:53:22,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135589199] [2020-10-24 00:53:22,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:53:22,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:53:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608743651] [2020-10-24 00:53:22,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:53:22,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:22,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:53:22,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:53:22,518 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 6 states. [2020-10-24 00:53:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:22,904 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-24 00:53:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:53:22,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-24 00:53:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:22,908 INFO L225 Difference]: With dead ends: 60 [2020-10-24 00:53:22,908 INFO L226 Difference]: Without dead ends: 53 [2020-10-24 00:53:22,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-24 00:53:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-24 00:53:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 00:53:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-24 00:53:22,948 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 26 [2020-10-24 00:53:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:22,948 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-24 00:53:22,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:53:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-24 00:53:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 00:53:22,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:22,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:22,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:53:22,957 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:22,958 INFO L82 PathProgramCache]: Analyzing trace with hash -708858972, now seen corresponding path program 1 times [2020-10-24 00:53:22,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:22,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880568442] [2020-10-24 00:53:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-24 00:53:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 00:53:23,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880568442] [2020-10-24 00:53:23,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:23,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 00:53:23,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262562964] [2020-10-24 00:53:23,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 00:53:23,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 00:53:23,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 00:53:23,124 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 7 states. [2020-10-24 00:53:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:23,454 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-10-24 00:53:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:53:23,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-24 00:53:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:23,457 INFO L225 Difference]: With dead ends: 92 [2020-10-24 00:53:23,457 INFO L226 Difference]: Without dead ends: 55 [2020-10-24 00:53:23,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-24 00:53:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-24 00:53:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-24 00:53:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-24 00:53:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-24 00:53:23,478 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 42 [2020-10-24 00:53:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:23,478 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-24 00:53:23,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 00:53:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-24 00:53:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-24 00:53:23,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:23,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:23,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:53:23,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1629720462, now seen corresponding path program 1 times [2020-10-24 00:53:23,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:23,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116856838] [2020-10-24 00:53:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 00:53:23,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116856838] [2020-10-24 00:53:23,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:23,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:53:23,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089644216] [2020-10-24 00:53:23,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:53:23,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:23,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:53:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:53:23,669 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 8 states. [2020-10-24 00:53:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:24,353 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-10-24 00:53:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:53:24,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-24 00:53:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:24,361 INFO L225 Difference]: With dead ends: 84 [2020-10-24 00:53:24,361 INFO L226 Difference]: Without dead ends: 77 [2020-10-24 00:53:24,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-24 00:53:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-24 00:53:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-10-24 00:53:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 00:53:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-24 00:53:24,389 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 43 [2020-10-24 00:53:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:24,390 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-24 00:53:24,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:53:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-24 00:53:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-24 00:53:24,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:24,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:24,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 00:53:24,394 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:24,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:24,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1688308117, now seen corresponding path program 1 times [2020-10-24 00:53:24,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:24,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848574198] [2020-10-24 00:53:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-24 00:53:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 00:53:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-24 00:53:24,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848574198] [2020-10-24 00:53:24,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:24,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 00:53:24,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118020093] [2020-10-24 00:53:24,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 00:53:24,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 00:53:24,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 00:53:24,647 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 7 states. [2020-10-24 00:53:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:25,026 INFO L93 Difference]: Finished difference Result 140 states and 188 transitions. [2020-10-24 00:53:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:53:25,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-24 00:53:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:25,030 INFO L225 Difference]: With dead ends: 140 [2020-10-24 00:53:25,030 INFO L226 Difference]: Without dead ends: 79 [2020-10-24 00:53:25,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-24 00:53:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-24 00:53:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-24 00:53:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 00:53:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-24 00:53:25,058 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 59 [2020-10-24 00:53:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:25,058 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-24 00:53:25,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 00:53:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-24 00:53:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-24 00:53:25,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:25,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:25,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 00:53:25,063 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash -439427312, now seen corresponding path program 1 times [2020-10-24 00:53:25,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:25,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082515112] [2020-10-24 00:53:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 00:53:25,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082515112] [2020-10-24 00:53:25,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:25,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:53:25,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396548565] [2020-10-24 00:53:25,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:53:25,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:25,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:53:25,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:53:25,306 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 8 states. [2020-10-24 00:53:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:25,854 INFO L93 Difference]: Finished difference Result 152 states and 207 transitions. [2020-10-24 00:53:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 00:53:25,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-24 00:53:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:25,859 INFO L225 Difference]: With dead ends: 152 [2020-10-24 00:53:25,859 INFO L226 Difference]: Without dead ends: 87 [2020-10-24 00:53:25,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-24 00:53:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-24 00:53:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-10-24 00:53:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-24 00:53:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-10-24 00:53:25,925 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 60 [2020-10-24 00:53:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:25,925 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-10-24 00:53:25,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:53:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-10-24 00:53:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-24 00:53:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:25,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:25,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 00:53:25,935 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1841264646, now seen corresponding path program 1 times [2020-10-24 00:53:25,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:25,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77474735] [2020-10-24 00:53:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-24 00:53:26,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77474735] [2020-10-24 00:53:26,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:26,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 00:53:26,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955737495] [2020-10-24 00:53:26,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 00:53:26,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:26,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 00:53:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:53:26,149 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 9 states. [2020-10-24 00:53:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:26,904 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2020-10-24 00:53:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 00:53:26,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-24 00:53:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:26,911 INFO L225 Difference]: With dead ends: 128 [2020-10-24 00:53:26,912 INFO L226 Difference]: Without dead ends: 121 [2020-10-24 00:53:26,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:53:26,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-24 00:53:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-10-24 00:53:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-24 00:53:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-10-24 00:53:26,953 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 61 [2020-10-24 00:53:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:26,954 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-10-24 00:53:26,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 00:53:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-10-24 00:53:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-24 00:53:26,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:26,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:26,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 00:53:26,957 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:26,958 INFO L82 PathProgramCache]: Analyzing trace with hash 942662771, now seen corresponding path program 1 times [2020-10-24 00:53:26,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088670716] [2020-10-24 00:53:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-24 00:53:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-24 00:53:27,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088670716] [2020-10-24 00:53:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 00:53:27,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251219813] [2020-10-24 00:53:27,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 00:53:27,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:27,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 00:53:27,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:53:27,151 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand 9 states. [2020-10-24 00:53:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:27,825 INFO L93 Difference]: Finished difference Result 237 states and 358 transitions. [2020-10-24 00:53:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:53:27,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-24 00:53:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:27,834 INFO L225 Difference]: With dead ends: 237 [2020-10-24 00:53:27,834 INFO L226 Difference]: Without dead ends: 136 [2020-10-24 00:53:27,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:53:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-24 00:53:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2020-10-24 00:53:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-24 00:53:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-10-24 00:53:27,889 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 78 [2020-10-24 00:53:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:27,890 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-10-24 00:53:27,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 00:53:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-10-24 00:53:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-24 00:53:27,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:27,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:27,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 00:53:27,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1118264142, now seen corresponding path program 1 times [2020-10-24 00:53:27,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:27,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341824549] [2020-10-24 00:53:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:27,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-24 00:53:28,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341824549] [2020-10-24 00:53:28,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:28,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:53:28,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961431053] [2020-10-24 00:53:28,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:53:28,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:53:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:28,170 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 10 states. [2020-10-24 00:53:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:28,904 INFO L93 Difference]: Finished difference Result 267 states and 410 transitions. [2020-10-24 00:53:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:53:28,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-24 00:53:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:28,908 INFO L225 Difference]: With dead ends: 267 [2020-10-24 00:53:28,908 INFO L226 Difference]: Without dead ends: 160 [2020-10-24 00:53:28,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:53:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-24 00:53:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2020-10-24 00:53:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-24 00:53:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 200 transitions. [2020-10-24 00:53:28,944 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 200 transitions. Word has length 79 [2020-10-24 00:53:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:28,945 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 200 transitions. [2020-10-24 00:53:28,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:53:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 200 transitions. [2020-10-24 00:53:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-24 00:53:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:28,948 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:28,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 00:53:28,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 546182201, now seen corresponding path program 2 times [2020-10-24 00:53:28,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:28,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468330325] [2020-10-24 00:53:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-24 00:53:29,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468330325] [2020-10-24 00:53:29,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:29,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:53:29,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641148253] [2020-10-24 00:53:29,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:53:29,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:53:29,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:29,188 INFO L87 Difference]: Start difference. First operand 142 states and 200 transitions. Second operand 10 states. [2020-10-24 00:53:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:30,129 INFO L93 Difference]: Finished difference Result 223 states and 325 transitions. [2020-10-24 00:53:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 00:53:30,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-24 00:53:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:30,136 INFO L225 Difference]: With dead ends: 223 [2020-10-24 00:53:30,137 INFO L226 Difference]: Without dead ends: 216 [2020-10-24 00:53:30,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:53:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-24 00:53:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2020-10-24 00:53:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-24 00:53:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 311 transitions. [2020-10-24 00:53:30,204 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 311 transitions. Word has length 97 [2020-10-24 00:53:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:30,204 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 311 transitions. [2020-10-24 00:53:30,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:53:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 311 transitions. [2020-10-24 00:53:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-24 00:53:30,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:30,210 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:30,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 00:53:30,210 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1242891877, now seen corresponding path program 2 times [2020-10-24 00:53:30,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:30,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363786472] [2020-10-24 00:53:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-24 00:53:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 46 proven. 48 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-24 00:53:30,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363786472] [2020-10-24 00:53:30,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:30,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:53:30,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851963476] [2020-10-24 00:53:30,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:53:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:53:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:30,511 INFO L87 Difference]: Start difference. First operand 210 states and 311 transitions. Second operand 10 states. [2020-10-24 00:53:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:31,358 INFO L93 Difference]: Finished difference Result 455 states and 768 transitions. [2020-10-24 00:53:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:53:31,359 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-24 00:53:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:31,365 INFO L225 Difference]: With dead ends: 455 [2020-10-24 00:53:31,365 INFO L226 Difference]: Without dead ends: 262 [2020-10-24 00:53:31,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:53:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-24 00:53:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 232. [2020-10-24 00:53:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-24 00:53:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2020-10-24 00:53:31,442 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 115 [2020-10-24 00:53:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:31,443 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2020-10-24 00:53:31,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:53:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2020-10-24 00:53:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-24 00:53:31,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:31,449 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:31,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 00:53:31,450 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:31,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1725326654, now seen corresponding path program 1 times [2020-10-24 00:53:31,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:31,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990057464] [2020-10-24 00:53:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 93 proven. 30 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-24 00:53:31,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990057464] [2020-10-24 00:53:31,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:31,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 00:53:31,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185109758] [2020-10-24 00:53:31,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 00:53:31,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 00:53:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-24 00:53:31,815 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand 11 states. [2020-10-24 00:53:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:32,924 INFO L93 Difference]: Finished difference Result 541 states and 948 transitions. [2020-10-24 00:53:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 00:53:32,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2020-10-24 00:53:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:32,931 INFO L225 Difference]: With dead ends: 541 [2020-10-24 00:53:32,932 INFO L226 Difference]: Without dead ends: 324 [2020-10-24 00:53:32,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-24 00:53:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-24 00:53:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-24 00:53:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-24 00:53:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 498 transitions. [2020-10-24 00:53:33,040 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 498 transitions. Word has length 132 [2020-10-24 00:53:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:33,041 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 498 transitions. [2020-10-24 00:53:33,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 00:53:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 498 transitions. [2020-10-24 00:53:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-24 00:53:33,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:33,047 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:33,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 00:53:33,048 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -666506750, now seen corresponding path program 2 times [2020-10-24 00:53:33,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:33,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082751867] [2020-10-24 00:53:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-24 00:53:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 162 proven. 141 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-24 00:53:33,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082751867] [2020-10-24 00:53:33,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:33,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 00:53:33,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737245120] [2020-10-24 00:53:33,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 00:53:33,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:33,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 00:53:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:53:33,573 INFO L87 Difference]: Start difference. First operand 319 states and 498 transitions. Second operand 16 states. [2020-10-24 00:53:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:35,970 INFO L93 Difference]: Finished difference Result 530 states and 903 transitions. [2020-10-24 00:53:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 00:53:35,971 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 184 [2020-10-24 00:53:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:35,975 INFO L225 Difference]: With dead ends: 530 [2020-10-24 00:53:35,975 INFO L226 Difference]: Without dead ends: 212 [2020-10-24 00:53:35,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2020-10-24 00:53:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-24 00:53:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 184. [2020-10-24 00:53:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-24 00:53:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2020-10-24 00:53:36,028 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 184 [2020-10-24 00:53:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:36,029 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2020-10-24 00:53:36,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 00:53:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2020-10-24 00:53:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-24 00:53:36,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:36,036 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:36,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 00:53:36,036 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:36,037 INFO L82 PathProgramCache]: Analyzing trace with hash 549251036, now seen corresponding path program 3 times [2020-10-24 00:53:36,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:36,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353469896] [2020-10-24 00:53:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 00:53:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 179 proven. 407 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-10-24 00:53:36,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353469896] [2020-10-24 00:53:36,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:36,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 00:53:36,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811761033] [2020-10-24 00:53:36,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 00:53:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 00:53:36,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-24 00:53:36,850 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand 15 states. [2020-10-24 00:53:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:39,153 INFO L93 Difference]: Finished difference Result 369 states and 547 transitions. [2020-10-24 00:53:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 00:53:39,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 272 [2020-10-24 00:53:39,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:39,159 INFO L225 Difference]: With dead ends: 369 [2020-10-24 00:53:39,159 INFO L226 Difference]: Without dead ends: 189 [2020-10-24 00:53:39,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 00:53:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-24 00:53:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 156. [2020-10-24 00:53:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-24 00:53:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2020-10-24 00:53:39,197 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 272 [2020-10-24 00:53:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:39,198 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2020-10-24 00:53:39,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 00:53:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2020-10-24 00:53:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-24 00:53:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:39,203 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:39,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 00:53:39,203 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:39,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1164220632, now seen corresponding path program 4 times [2020-10-24 00:53:39,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:39,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428918576] [2020-10-24 00:53:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 253 proven. 389 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2020-10-24 00:53:39,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428918576] [2020-10-24 00:53:39,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:39,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 00:53:39,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052891289] [2020-10-24 00:53:39,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 00:53:39,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:39,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 00:53:39,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:53:39,964 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand 17 states. [2020-10-24 00:53:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:42,687 INFO L93 Difference]: Finished difference Result 330 states and 474 transitions. [2020-10-24 00:53:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-24 00:53:42,688 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 272 [2020-10-24 00:53:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:42,692 INFO L225 Difference]: With dead ends: 330 [2020-10-24 00:53:42,692 INFO L226 Difference]: Without dead ends: 191 [2020-10-24 00:53:42,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=329, Invalid=1927, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 00:53:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-24 00:53:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 165. [2020-10-24 00:53:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-24 00:53:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2020-10-24 00:53:42,730 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 272 [2020-10-24 00:53:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:42,731 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2020-10-24 00:53:42,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 00:53:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2020-10-24 00:53:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-24 00:53:42,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:42,738 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:42,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 00:53:42,739 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash -70943467, now seen corresponding path program 5 times [2020-10-24 00:53:42,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:42,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022322825] [2020-10-24 00:53:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:42,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 00:53:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 00:53:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 00:53:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2553 backedges. 130 proven. 675 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2020-10-24 00:53:43,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022322825] [2020-10-24 00:53:43,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:43,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 00:53:43,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336372191] [2020-10-24 00:53:43,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 00:53:43,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 00:53:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-24 00:53:43,740 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand 13 states. [2020-10-24 00:53:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:45,161 INFO L93 Difference]: Finished difference Result 388 states and 532 transitions. [2020-10-24 00:53:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 00:53:45,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 379 [2020-10-24 00:53:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:45,169 INFO L225 Difference]: With dead ends: 388 [2020-10-24 00:53:45,169 INFO L226 Difference]: Without dead ends: 381 [2020-10-24 00:53:45,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-24 00:53:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-24 00:53:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 345. [2020-10-24 00:53:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-24 00:53:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 470 transitions. [2020-10-24 00:53:45,265 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 470 transitions. Word has length 379 [2020-10-24 00:53:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:45,266 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 470 transitions. [2020-10-24 00:53:45,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 00:53:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 470 transitions. [2020-10-24 00:53:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-24 00:53:45,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:45,272 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 26, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:45,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 00:53:45,272 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -724541943, now seen corresponding path program 6 times [2020-10-24 00:53:45,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:45,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250474690] [2020-10-24 00:53:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:45,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 00:53:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 00:53:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 00:53:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 00:53:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 00:53:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5455 backedges. 401 proven. 1176 refuted. 0 times theorem prover too weak. 3878 trivial. 0 not checked. [2020-10-24 00:53:47,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250474690] [2020-10-24 00:53:47,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:47,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 00:53:47,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240980492] [2020-10-24 00:53:47,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 00:53:47,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:47,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 00:53:47,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-24 00:53:47,022 INFO L87 Difference]: Start difference. First operand 345 states and 470 transitions. Second operand 15 states. [2020-10-24 00:53:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:48,908 INFO L93 Difference]: Finished difference Result 733 states and 1064 transitions. [2020-10-24 00:53:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-24 00:53:48,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 539 [2020-10-24 00:53:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:48,917 INFO L225 Difference]: With dead ends: 733 [2020-10-24 00:53:48,917 INFO L226 Difference]: Without dead ends: 410 [2020-10-24 00:53:48,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 00:53:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-24 00:53:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 368. [2020-10-24 00:53:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-10-24 00:53:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 497 transitions. [2020-10-24 00:53:49,018 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 497 transitions. Word has length 539 [2020-10-24 00:53:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:49,019 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 497 transitions. [2020-10-24 00:53:49,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 00:53:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 497 transitions. [2020-10-24 00:53:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2020-10-24 00:53:49,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:49,028 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 40, 40, 37, 33, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 13, 13, 10, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:49,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 00:53:49,029 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:49,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1307015216, now seen corresponding path program 7 times [2020-10-24 00:53:49,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:49,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601429266] [2020-10-24 00:53:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 00:53:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 00:53:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 00:53:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10972 backedges. 2056 proven. 1677 refuted. 0 times theorem prover too weak. 7239 trivial. 0 not checked. [2020-10-24 00:53:51,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601429266] [2020-10-24 00:53:51,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:51,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-24 00:53:51,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204542537] [2020-10-24 00:53:51,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-24 00:53:51,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-24 00:53:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-24 00:53:51,675 INFO L87 Difference]: Start difference. First operand 368 states and 497 transitions. Second operand 23 states. [2020-10-24 00:53:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:55,701 INFO L93 Difference]: Finished difference Result 897 states and 1464 transitions. [2020-10-24 00:53:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 00:53:55,702 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 751 [2020-10-24 00:53:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:55,717 INFO L225 Difference]: With dead ends: 897 [2020-10-24 00:53:55,718 INFO L226 Difference]: Without dead ends: 551 [2020-10-24 00:53:55,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=445, Invalid=2747, Unknown=0, NotChecked=0, Total=3192 [2020-10-24 00:53:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-24 00:53:55,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 510. [2020-10-24 00:53:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-24 00:53:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 757 transitions. [2020-10-24 00:53:55,888 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 757 transitions. Word has length 751 [2020-10-24 00:53:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:55,890 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 757 transitions. [2020-10-24 00:53:55,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-24 00:53:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 757 transitions. [2020-10-24 00:53:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-24 00:53:55,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:55,901 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 30, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 10, 10, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:55,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 00:53:55,902 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:55,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2006877134, now seen corresponding path program 8 times [2020-10-24 00:53:55,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:55,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247618247] [2020-10-24 00:53:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 00:53:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 00:53:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 00:53:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 00:53:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 00:53:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7091 backedges. 577 proven. 1801 refuted. 0 times theorem prover too weak. 4713 trivial. 0 not checked. [2020-10-24 00:53:57,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247618247] [2020-10-24 00:53:57,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:57,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 00:53:57,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907126523] [2020-10-24 00:53:57,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 00:53:57,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 00:53:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-24 00:53:57,899 INFO L87 Difference]: Start difference. First operand 510 states and 757 transitions. Second operand 18 states. [2020-10-24 00:54:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:00,492 INFO L93 Difference]: Finished difference Result 1025 states and 1685 transitions. [2020-10-24 00:54:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-24 00:54:00,493 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 610 [2020-10-24 00:54:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:00,509 INFO L225 Difference]: With dead ends: 1025 [2020-10-24 00:54:00,509 INFO L226 Difference]: Without dead ends: 537 [2020-10-24 00:54:00,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=313, Invalid=1579, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 00:54:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-10-24 00:54:00,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 498. [2020-10-24 00:54:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-24 00:54:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 743 transitions. [2020-10-24 00:54:00,651 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 743 transitions. Word has length 610 [2020-10-24 00:54:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:00,652 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 743 transitions. [2020-10-24 00:54:00,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 00:54:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 743 transitions. [2020-10-24 00:54:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-24 00:54:00,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:00,660 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 9, 9, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:00,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 00:54:00,661 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:00,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1477670013, now seen corresponding path program 9 times [2020-10-24 00:54:00,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:00,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40155554] [2020-10-24 00:54:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 00:54:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 884 proven. 974 refuted. 0 times theorem prover too weak. 3155 trivial. 0 not checked. [2020-10-24 00:54:02,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40155554] [2020-10-24 00:54:02,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:02,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-24 00:54:02,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024337180] [2020-10-24 00:54:02,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-24 00:54:02,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:02,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-24 00:54:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-24 00:54:02,505 INFO L87 Difference]: Start difference. First operand 498 states and 743 transitions. Second operand 19 states. [2020-10-24 00:54:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:05,929 INFO L93 Difference]: Finished difference Result 1124 states and 1850 transitions. [2020-10-24 00:54:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 00:54:05,930 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 519 [2020-10-24 00:54:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:05,946 INFO L225 Difference]: With dead ends: 1124 [2020-10-24 00:54:05,947 INFO L226 Difference]: Without dead ends: 647 [2020-10-24 00:54:05,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=352, Invalid=2300, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 00:54:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-24 00:54:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 576. [2020-10-24 00:54:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-24 00:54:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 904 transitions. [2020-10-24 00:54:06,097 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 904 transitions. Word has length 519 [2020-10-24 00:54:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:06,098 INFO L481 AbstractCegarLoop]: Abstraction has 576 states and 904 transitions. [2020-10-24 00:54:06,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-24 00:54:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 904 transitions. [2020-10-24 00:54:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2020-10-24 00:54:06,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:06,108 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 41, 41, 36, 32, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 10, 10, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:06,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 00:54:06,109 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash -238698752, now seen corresponding path program 10 times [2020-10-24 00:54:06,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:06,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375876590] [2020-10-24 00:54:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-24 00:54:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 00:54:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11366 backedges. 986 proven. 2684 refuted. 0 times theorem prover too weak. 7696 trivial. 0 not checked. [2020-10-24 00:54:08,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375876590] [2020-10-24 00:54:08,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:08,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 00:54:08,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125379744] [2020-10-24 00:54:08,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 00:54:08,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 00:54:08,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-24 00:54:08,302 INFO L87 Difference]: Start difference. First operand 576 states and 904 transitions. Second operand 22 states. [2020-10-24 00:54:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:12,479 INFO L93 Difference]: Finished difference Result 1255 states and 2224 transitions. [2020-10-24 00:54:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-24 00:54:12,480 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 765 [2020-10-24 00:54:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:12,495 INFO L225 Difference]: With dead ends: 1255 [2020-10-24 00:54:12,495 INFO L226 Difference]: Without dead ends: 701 [2020-10-24 00:54:12,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=617, Invalid=3543, Unknown=0, NotChecked=0, Total=4160 [2020-10-24 00:54:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-24 00:54:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 664. [2020-10-24 00:54:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-24 00:54:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1029 transitions. [2020-10-24 00:54:12,663 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1029 transitions. Word has length 765 [2020-10-24 00:54:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:12,665 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1029 transitions. [2020-10-24 00:54:12,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 00:54:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1029 transitions. [2020-10-24 00:54:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-24 00:54:12,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:12,674 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 14, 14, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:12,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 00:54:12,674 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:12,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1501432396, now seen corresponding path program 11 times [2020-10-24 00:54:12,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:12,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35579137] [2020-10-24 00:54:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 00:54:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10826 backedges. 1189 proven. 2172 refuted. 0 times theorem prover too weak. 7465 trivial. 0 not checked. [2020-10-24 00:54:14,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35579137] [2020-10-24 00:54:14,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:14,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-24 00:54:14,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765625582] [2020-10-24 00:54:14,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-24 00:54:14,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:14,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-24 00:54:14,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-24 00:54:14,858 INFO L87 Difference]: Start difference. First operand 664 states and 1029 transitions. Second operand 21 states. [2020-10-24 00:54:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:19,256 INFO L93 Difference]: Finished difference Result 1096 states and 1772 transitions. [2020-10-24 00:54:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-24 00:54:19,257 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 748 [2020-10-24 00:54:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:19,266 INFO L225 Difference]: With dead ends: 1096 [2020-10-24 00:54:19,266 INFO L226 Difference]: Without dead ends: 373 [2020-10-24 00:54:19,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=519, Invalid=3387, Unknown=0, NotChecked=0, Total=3906 [2020-10-24 00:54:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-24 00:54:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 318. [2020-10-24 00:54:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-24 00:54:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 448 transitions. [2020-10-24 00:54:19,364 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 448 transitions. Word has length 748 [2020-10-24 00:54:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:19,365 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 448 transitions. [2020-10-24 00:54:19,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-24 00:54:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 448 transitions. [2020-10-24 00:54:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-10-24 00:54:19,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:19,372 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 13, 13, 10, 10, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:19,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 00:54:19,372 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1927969767, now seen corresponding path program 12 times [2020-10-24 00:54:19,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:19,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394017588] [2020-10-24 00:54:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 00:54:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8348 backedges. 1712 proven. 1706 refuted. 0 times theorem prover too weak. 4930 trivial. 0 not checked. [2020-10-24 00:54:21,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394017588] [2020-10-24 00:54:21,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:21,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-24 00:54:21,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690506834] [2020-10-24 00:54:21,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-24 00:54:21,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:21,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-24 00:54:21,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-24 00:54:21,218 INFO L87 Difference]: Start difference. First operand 318 states and 448 transitions. Second operand 25 states. [2020-10-24 00:54:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:26,392 INFO L93 Difference]: Finished difference Result 652 states and 994 transitions. [2020-10-24 00:54:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-24 00:54:26,392 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 660 [2020-10-24 00:54:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:26,400 INFO L225 Difference]: With dead ends: 652 [2020-10-24 00:54:26,400 INFO L226 Difference]: Without dead ends: 355 [2020-10-24 00:54:26,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=806, Invalid=5046, Unknown=0, NotChecked=0, Total=5852 [2020-10-24 00:54:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-24 00:54:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 311. [2020-10-24 00:54:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-24 00:54:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 437 transitions. [2020-10-24 00:54:26,477 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 437 transitions. Word has length 660 [2020-10-24 00:54:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:26,477 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 437 transitions. [2020-10-24 00:54:26,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-24 00:54:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 437 transitions. [2020-10-24 00:54:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-24 00:54:26,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:26,484 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 11, 10, 10, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:26,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 00:54:26,484 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1417613262, now seen corresponding path program 13 times [2020-10-24 00:54:26,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:26,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608113339] [2020-10-24 00:54:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:54:26,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:54:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:54:26,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:54:26,971 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:54:26,971 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:54:26,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 00:54:27,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:54:27 BoogieIcfgContainer [2020-10-24 00:54:27,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:54:27,224 INFO L168 Benchmark]: Toolchain (without parser) took 67036.04 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 959.4 MB). Free memory was 134.7 MB in the beginning and 593.2 MB in the end (delta: -458.5 MB). Peak memory consumption was 501.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:27,224 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:54:27,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.17 ms. Allocated memory is still 157.3 MB. Free memory was 134.2 MB in the beginning and 124.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:27,225 INFO L168 Benchmark]: Boogie Preprocessor took 37.69 ms. Allocated memory is still 157.3 MB. Free memory was 124.2 MB in the beginning and 123.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:27,226 INFO L168 Benchmark]: RCFGBuilder took 472.22 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 107.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:27,226 INFO L168 Benchmark]: TraceAbstraction took 66260.35 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 959.4 MB). Free memory was 107.1 MB in the beginning and 593.8 MB in the end (delta: -486.7 MB). Peak memory consumption was 473.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:27,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.17 ms. Allocated memory is still 157.3 MB. Free memory was 134.2 MB in the beginning and 124.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.69 ms. Allocated memory is still 157.3 MB. Free memory was 124.2 MB in the beginning and 123.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 472.22 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 107.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66260.35 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 959.4 MB). Free memory was 107.1 MB in the beginning and 593.8 MB in the end (delta: -486.7 MB). Peak memory consumption was 473.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int x = 8; VAL [x=8] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=8] [L10] COND FALSE !(n < 1) VAL [\old(n)=8, n=8] [L12] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=7] [L20] COND FALSE !(n < 1) VAL [\old(n)=7, n=7] [L22] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=6] [L10] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L12] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L20] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L22] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=4, \result=3, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=5, fibo1(n-1)=3, n=5] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=5, \result=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=6, fibo2(n-1)=5, n=6] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=6, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=6, \result=8, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=7, fibo1(n-1)=8, n=7] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=5, \result=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=7, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=7, \result=13, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=8, fibo2(n-1)=13, n=8] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=6] [L20] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L22] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=5, \result=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=6, fibo1(n-1)=5, n=6] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=4, \result=3, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=6, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L25] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=6, \result=8, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=8, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L15] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=8, \result=21, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L39] RET, EXPR fibo1(x) VAL [fibo1(x)=21, x=8] [L39] int result = fibo1(x); VAL [fibo1(x)=21, result=21, x=8] [L40] COND TRUE result == 21 VAL [result=21, x=8] [L41] CALL reach_error() [L4] __assert_fail("0", "fibo_2calls_8-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 65.8s, OverallIterations: 24, TraceHistogramMax: 44, AutomataDifference: 42.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1371 SDtfs, 3386 SDslu, 3459 SDs, 0 SdLazy, 13749 SolverSat, 2021 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2165 GetRequests, 1481 SyntacticMatches, 0 SemanticMatches, 684 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7819 ImplicationChecksByTransitivity, 26.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=664occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 23 MinimizatonAttempts, 541 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 7123 NumberOfCodeBlocks, 7123 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 6493 ConstructedInterpolants, 0 QuantifiedInterpolants, 5069683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 51224/65191 InterpolantCoveringCapability, 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 incorrect! Received shutdown request...