/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 0.2.0-7d8eed3 [2020-11-07 05:05:25,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:05:25,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:05:25,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:05:25,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:05:25,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:05:25,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:05:25,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:05:25,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:05:25,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:05:25,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:05:25,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:05:25,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:05:25,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:05:25,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:05:25,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:05:25,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:05:25,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:05:25,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:05:25,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:05:25,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:05:26,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:05:26,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:05:26,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:05:26,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:05:26,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:05:26,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:05:26,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:05:26,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:05:26,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:05:26,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:05:26,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:05:26,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:05:26,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:05:26,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:05:26,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:05:26,017 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:05:26,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:05:26,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:05:26,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:05:26,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:05:26,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:05:26,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:05:26,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:05:26,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:05:26,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:05:26,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:05:26,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:05:26,512 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:05:26,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-11-07 05:05:26,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14e2ad69/4579f98c849b4077824d7d0322349b60/FLAG3166bd765 [2020-11-07 05:05:27,232 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:05:27,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-11-07 05:05:27,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14e2ad69/4579f98c849b4077824d7d0322349b60/FLAG3166bd765 [2020-11-07 05:05:27,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14e2ad69/4579f98c849b4077824d7d0322349b60 [2020-11-07 05:05:27,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:05:27,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:05:27,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:05:27,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:05:27,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:05:27,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33014f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27, skipping insertion in model container [2020-11-07 05:05:27,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:05:27,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:05:27,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:05:27,855 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:05:27,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:05:27,896 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:05:27,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27 WrapperNode [2020-11-07 05:05:27,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:05:27,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:05:27,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:05:27,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:05:27,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (1/1) ... [2020-11-07 05:05:27,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:05:27,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:05:27,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:05:27,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:05:27,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (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 [2020-11-07 05:05:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:05:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:05:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:05:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-07 05:05:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-07 05:05:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:05:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:05:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:05:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:05:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:05:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:05:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-07 05:05:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-07 05:05:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:05:28,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:05:28,395 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:05:28,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:05:28 BoogieIcfgContainer [2020-11-07 05:05:28,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:05:28,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:05:28,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:05:28,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:05:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:05:27" (1/3) ... [2020-11-07 05:05:28,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:05:28, skipping insertion in model container [2020-11-07 05:05:28,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:05:27" (2/3) ... [2020-11-07 05:05:28,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:05:28, skipping insertion in model container [2020-11-07 05:05:28,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:05:28" (3/3) ... [2020-11-07 05:05:28,407 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-11-07 05:05:28,425 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:05:28,429 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:05:28,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:05:28,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:05:28,501 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:05:28,501 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:05:28,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:05:28,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:05:28,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:05:28,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:05:28,502 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:05:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-11-07 05:05:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 05:05:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:28,535 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] [2020-11-07 05:05:28,535 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:28,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:28,542 INFO L82 PathProgramCache]: Analyzing trace with hash 775886402, now seen corresponding path program 1 times [2020-11-07 05:05:28,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:28,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511040928] [2020-11-07 05:05:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:05:28,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511040928] [2020-11-07 05:05:28,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:05:28,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:05:28,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438534361] [2020-11-07 05:05:28,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:05:28,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:05:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:05:28,954 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 6 states. [2020-11-07 05:05:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:29,508 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-11-07 05:05:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:05:29,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 05:05:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:29,522 INFO L225 Difference]: With dead ends: 74 [2020-11-07 05:05:29,523 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 05:05:29,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:05:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 05:05:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 05:05:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 05:05:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-07 05:05:29,593 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 25 [2020-11-07 05:05:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:29,593 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-07 05:05:29,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:05:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-07 05:05:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 05:05:29,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:29,597 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] [2020-11-07 05:05:29,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:05:29,598 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash 478831265, now seen corresponding path program 1 times [2020-11-07 05:05:29,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:29,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398875885] [2020-11-07 05:05:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:05:29,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398875885] [2020-11-07 05:05:29,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:05:29,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:05:29,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390037703] [2020-11-07 05:05:29,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:05:29,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:29,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:05:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:05:29,770 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 6 states. [2020-11-07 05:05:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:30,144 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-11-07 05:05:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:05:30,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-07 05:05:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:30,148 INFO L225 Difference]: With dead ends: 60 [2020-11-07 05:05:30,148 INFO L226 Difference]: Without dead ends: 53 [2020-11-07 05:05:30,149 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 [2020-11-07 05:05:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-07 05:05:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-11-07 05:05:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 05:05:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-07 05:05:30,186 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 26 [2020-11-07 05:05:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:30,186 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-07 05:05:30,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:05:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-07 05:05:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 05:05:30,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:30,189 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] [2020-11-07 05:05:30,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:05:30,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash -708858972, now seen corresponding path program 1 times [2020-11-07 05:05:30,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:30,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794483765] [2020-11-07 05:05:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 05:05:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:05:30,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794483765] [2020-11-07 05:05:30,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:30,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:05:30,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849947919] [2020-11-07 05:05:30,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:05:30,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:05:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:05:30,373 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 7 states. [2020-11-07 05:05:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:30,690 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-11-07 05:05:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:05:30,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-07 05:05:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:30,693 INFO L225 Difference]: With dead ends: 92 [2020-11-07 05:05:30,693 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 05:05:30,695 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 [2020-11-07 05:05:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 05:05:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-07 05:05:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 05:05:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-11-07 05:05:30,717 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 42 [2020-11-07 05:05:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:30,718 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-11-07 05:05:30,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:05:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-11-07 05:05:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 05:05:30,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:30,723 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] [2020-11-07 05:05:30,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:05:30,723 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1629720462, now seen corresponding path program 1 times [2020-11-07 05:05:30,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:30,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134249320] [2020-11-07 05:05:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:05:30,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134249320] [2020-11-07 05:05:30,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:30,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:05:30,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573891993] [2020-11-07 05:05:30,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:05:30,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:05:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:05:30,935 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 8 states. [2020-11-07 05:05:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:31,661 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-07 05:05:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:05:31,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-07 05:05:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:31,668 INFO L225 Difference]: With dead ends: 84 [2020-11-07 05:05:31,668 INFO L226 Difference]: Without dead ends: 77 [2020-11-07 05:05:31,669 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 [2020-11-07 05:05:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-07 05:05:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-11-07 05:05:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 05:05:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-11-07 05:05:31,692 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 43 [2020-11-07 05:05:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:31,692 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-11-07 05:05:31,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:05:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-11-07 05:05:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 05:05:31,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:31,696 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] [2020-11-07 05:05:31,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:05:31,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1688308117, now seen corresponding path program 1 times [2020-11-07 05:05:31,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:31,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961192169] [2020-11-07 05:05:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 05:05:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 05:05:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 05:05:31,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961192169] [2020-11-07 05:05:31,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:31,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:05:31,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424242083] [2020-11-07 05:05:31,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:05:31,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:05:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:05:31,874 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 7 states. [2020-11-07 05:05:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:32,296 INFO L93 Difference]: Finished difference Result 140 states and 188 transitions. [2020-11-07 05:05:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:05:32,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-11-07 05:05:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:32,299 INFO L225 Difference]: With dead ends: 140 [2020-11-07 05:05:32,299 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 05:05:32,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:05:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 05:05:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-07 05:05:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 05:05:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-11-07 05:05:32,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 59 [2020-11-07 05:05:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:32,326 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-11-07 05:05:32,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:05:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-11-07 05:05:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 05:05:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:32,330 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] [2020-11-07 05:05:32,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:05:32,330 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash -439427312, now seen corresponding path program 1 times [2020-11-07 05:05:32,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:32,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425177748] [2020-11-07 05:05:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 05:05:32,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425177748] [2020-11-07 05:05:32,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:32,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:05:32,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015981318] [2020-11-07 05:05:32,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:05:32,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:05:32,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:05:32,518 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 8 states. [2020-11-07 05:05:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:33,100 INFO L93 Difference]: Finished difference Result 152 states and 207 transitions. [2020-11-07 05:05:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 05:05:33,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-11-07 05:05:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:33,105 INFO L225 Difference]: With dead ends: 152 [2020-11-07 05:05:33,108 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 05:05:33,111 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 [2020-11-07 05:05:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 05:05:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-11-07 05:05:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-07 05:05:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-11-07 05:05:33,164 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 60 [2020-11-07 05:05:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:33,164 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-11-07 05:05:33,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:05:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-11-07 05:05:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-07 05:05:33,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:33,177 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] [2020-11-07 05:05:33,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:05:33,178 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:33,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1841264646, now seen corresponding path program 1 times [2020-11-07 05:05:33,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:33,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067758171] [2020-11-07 05:05:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 05:05:33,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067758171] [2020-11-07 05:05:33,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:33,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:05:33,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767132002] [2020-11-07 05:05:33,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:05:33,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:33,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:05:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:05:33,415 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 9 states. [2020-11-07 05:05:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:34,163 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2020-11-07 05:05:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:05:34,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-11-07 05:05:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:34,166 INFO L225 Difference]: With dead ends: 128 [2020-11-07 05:05:34,166 INFO L226 Difference]: Without dead ends: 121 [2020-11-07 05:05:34,167 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 [2020-11-07 05:05:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-07 05:05:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-11-07 05:05:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-07 05:05:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-11-07 05:05:34,224 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 61 [2020-11-07 05:05:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:34,225 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-11-07 05:05:34,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:05:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-11-07 05:05:34,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-07 05:05:34,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:34,232 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] [2020-11-07 05:05:34,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:05:34,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash 942662771, now seen corresponding path program 1 times [2020-11-07 05:05:34,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:34,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851095111] [2020-11-07 05:05:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 05:05:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 05:05:34,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851095111] [2020-11-07 05:05:34,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:34,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:05:34,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452565770] [2020-11-07 05:05:34,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:05:34,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:34,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:05:34,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:05:34,443 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand 9 states. [2020-11-07 05:05:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:35,068 INFO L93 Difference]: Finished difference Result 237 states and 358 transitions. [2020-11-07 05:05:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:05:35,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-11-07 05:05:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:35,072 INFO L225 Difference]: With dead ends: 237 [2020-11-07 05:05:35,072 INFO L226 Difference]: Without dead ends: 136 [2020-11-07 05:05:35,074 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 [2020-11-07 05:05:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-07 05:05:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2020-11-07 05:05:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-07 05:05:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-11-07 05:05:35,110 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 78 [2020-11-07 05:05:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:35,110 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-11-07 05:05:35,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:05:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-11-07 05:05:35,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-07 05:05:35,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:35,113 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] [2020-11-07 05:05:35,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:05:35,114 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:35,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1118264142, now seen corresponding path program 1 times [2020-11-07 05:05:35,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:35,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905047552] [2020-11-07 05:05:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-07 05:05:35,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905047552] [2020-11-07 05:05:35,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:35,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:05:35,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990445380] [2020-11-07 05:05:35,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:05:35,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:35,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:05:35,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:05:35,312 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 10 states. [2020-11-07 05:05:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:36,055 INFO L93 Difference]: Finished difference Result 267 states and 410 transitions. [2020-11-07 05:05:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:05:36,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-11-07 05:05:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:36,060 INFO L225 Difference]: With dead ends: 267 [2020-11-07 05:05:36,060 INFO L226 Difference]: Without dead ends: 160 [2020-11-07 05:05:36,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:05:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-07 05:05:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2020-11-07 05:05:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-07 05:05:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 200 transitions. [2020-11-07 05:05:36,122 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 200 transitions. Word has length 79 [2020-11-07 05:05:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:36,124 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 200 transitions. [2020-11-07 05:05:36,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:05:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 200 transitions. [2020-11-07 05:05:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-07 05:05:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:36,129 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] [2020-11-07 05:05:36,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:05:36,129 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash 546182201, now seen corresponding path program 2 times [2020-11-07 05:05:36,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:36,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358198194] [2020-11-07 05:05:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-07 05:05:36,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358198194] [2020-11-07 05:05:36,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:36,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:05:36,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694991048] [2020-11-07 05:05:36,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:05:36,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:36,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:05:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:05:36,451 INFO L87 Difference]: Start difference. First operand 142 states and 200 transitions. Second operand 10 states. [2020-11-07 05:05:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:37,343 INFO L93 Difference]: Finished difference Result 223 states and 325 transitions. [2020-11-07 05:05:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:05:37,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-11-07 05:05:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:37,352 INFO L225 Difference]: With dead ends: 223 [2020-11-07 05:05:37,352 INFO L226 Difference]: Without dead ends: 216 [2020-11-07 05:05:37,353 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 [2020-11-07 05:05:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-07 05:05:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2020-11-07 05:05:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-11-07 05:05:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 311 transitions. [2020-11-07 05:05:37,423 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 311 transitions. Word has length 97 [2020-11-07 05:05:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:37,424 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 311 transitions. [2020-11-07 05:05:37,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:05:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 311 transitions. [2020-11-07 05:05:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-07 05:05:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:37,432 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] [2020-11-07 05:05:37,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:05:37,432 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:37,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1242891877, now seen corresponding path program 2 times [2020-11-07 05:05:37,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:37,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685843226] [2020-11-07 05:05:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-07 05:05:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 46 proven. 48 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-11-07 05:05:37,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685843226] [2020-11-07 05:05:37,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:37,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:05:37,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537345453] [2020-11-07 05:05:37,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:05:37,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:37,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:05:37,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:05:37,721 INFO L87 Difference]: Start difference. First operand 210 states and 311 transitions. Second operand 10 states. [2020-11-07 05:05:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:38,442 INFO L93 Difference]: Finished difference Result 455 states and 768 transitions. [2020-11-07 05:05:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:05:38,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-11-07 05:05:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:38,448 INFO L225 Difference]: With dead ends: 455 [2020-11-07 05:05:38,448 INFO L226 Difference]: Without dead ends: 262 [2020-11-07 05:05:38,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:05:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-07 05:05:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 232. [2020-11-07 05:05:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-07 05:05:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2020-11-07 05:05:38,505 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 115 [2020-11-07 05:05:38,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:38,505 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2020-11-07 05:05:38,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:05:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2020-11-07 05:05:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-07 05:05:38,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:38,511 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-07 05:05:38,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:05:38,512 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1046535914, now seen corresponding path program 1 times [2020-11-07 05:05:38,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:38,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843023976] [2020-11-07 05:05:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:05:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-11-07 05:05:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 42 proven. 188 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-11-07 05:05:38,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843023976] [2020-11-07 05:05:38,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:38,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:05:38,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339847051] [2020-11-07 05:05:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:05:38,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:05:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:05:38,903 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand 11 states. [2020-11-07 05:05:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:39,967 INFO L93 Difference]: Finished difference Result 359 states and 571 transitions. [2020-11-07 05:05:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:05:39,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 185 [2020-11-07 05:05:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:39,976 INFO L225 Difference]: With dead ends: 359 [2020-11-07 05:05:39,976 INFO L226 Difference]: Without dead ends: 352 [2020-11-07 05:05:39,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-11-07 05:05:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-11-07 05:05:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 340. [2020-11-07 05:05:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-11-07 05:05:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 550 transitions. [2020-11-07 05:05:40,072 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 550 transitions. Word has length 185 [2020-11-07 05:05:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:40,072 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 550 transitions. [2020-11-07 05:05:40,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:05:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 550 transitions. [2020-11-07 05:05:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-07 05:05:40,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:40,083 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:40,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:05:40,084 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash -511149312, now seen corresponding path program 3 times [2020-11-07 05:05:40,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:40,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730979026] [2020-11-07 05:05:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-07 05:05:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-11-07 05:05:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:05:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 146 proven. 171 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2020-11-07 05:05:40,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730979026] [2020-11-07 05:05:40,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:40,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:05:40,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143344474] [2020-11-07 05:05:40,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:05:40,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:05:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:05:40,716 INFO L87 Difference]: Start difference. First operand 340 states and 550 transitions. Second operand 11 states. [2020-11-07 05:05:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:41,766 INFO L93 Difference]: Finished difference Result 766 states and 1451 transitions. [2020-11-07 05:05:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 05:05:41,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2020-11-07 05:05:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:41,776 INFO L225 Difference]: With dead ends: 766 [2020-11-07 05:05:41,777 INFO L226 Difference]: Without dead ends: 442 [2020-11-07 05:05:41,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:05:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-11-07 05:05:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 430. [2020-11-07 05:05:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-11-07 05:05:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 721 transitions. [2020-11-07 05:05:41,932 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 721 transitions. Word has length 222 [2020-11-07 05:05:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:41,932 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 721 transitions. [2020-11-07 05:05:41,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:05:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 721 transitions. [2020-11-07 05:05:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-07 05:05:41,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:41,943 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2020-11-07 05:05:41,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:05:41,943 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash -67839121, now seen corresponding path program 2 times [2020-11-07 05:05:41,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:41,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990860565] [2020-11-07 05:05:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:05:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 179 proven. 163 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-11-07 05:05:42,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990860565] [2020-11-07 05:05:42,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:42,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 05:05:42,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330109741] [2020-11-07 05:05:42,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:05:42,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:42,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:05:42,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:05:42,467 INFO L87 Difference]: Start difference. First operand 430 states and 721 transitions. Second operand 14 states. [2020-11-07 05:05:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:44,500 INFO L93 Difference]: Finished difference Result 1045 states and 1973 transitions. [2020-11-07 05:05:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 05:05:44,501 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 202 [2020-11-07 05:05:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:44,514 INFO L225 Difference]: With dead ends: 1045 [2020-11-07 05:05:44,514 INFO L226 Difference]: Without dead ends: 621 [2020-11-07 05:05:44,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-11-07 05:05:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-11-07 05:05:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 534. [2020-11-07 05:05:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-11-07 05:05:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 854 transitions. [2020-11-07 05:05:44,675 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 854 transitions. Word has length 202 [2020-11-07 05:05:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:44,675 INFO L481 AbstractCegarLoop]: Abstraction has 534 states and 854 transitions. [2020-11-07 05:05:44,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:05:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 854 transitions. [2020-11-07 05:05:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-11-07 05:05:44,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:44,688 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 15, 15, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:44,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:05:44,689 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:44,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1369698103, now seen corresponding path program 4 times [2020-11-07 05:05:44,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:44,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168670129] [2020-11-07 05:05:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-07 05:05:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:05:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-07 05:05:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:05:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 05:05:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:05:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 203 proven. 541 refuted. 0 times theorem prover too weak. 1150 trivial. 0 not checked. [2020-11-07 05:05:45,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168670129] [2020-11-07 05:05:45,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:45,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 05:05:45,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213769660] [2020-11-07 05:05:45,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 05:05:45,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:45,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 05:05:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:05:45,508 INFO L87 Difference]: Start difference. First operand 534 states and 854 transitions. Second operand 16 states. [2020-11-07 05:05:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:47,669 INFO L93 Difference]: Finished difference Result 863 states and 1468 transitions. [2020-11-07 05:05:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-07 05:05:47,669 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-11-07 05:05:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:47,675 INFO L225 Difference]: With dead ends: 863 [2020-11-07 05:05:47,675 INFO L226 Difference]: Without dead ends: 334 [2020-11-07 05:05:47,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 05:05:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-07 05:05:47,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 306. [2020-11-07 05:05:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-11-07 05:05:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 430 transitions. [2020-11-07 05:05:47,750 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 430 transitions. Word has length 313 [2020-11-07 05:05:47,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:47,751 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 430 transitions. [2020-11-07 05:05:47,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 05:05:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 430 transitions. [2020-11-07 05:05:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-11-07 05:05:47,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:47,757 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2020-11-07 05:05:47,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:05:47,757 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash -914043270, now seen corresponding path program 3 times [2020-11-07 05:05:47,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:47,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108638600] [2020-11-07 05:05:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:47,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:05:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 60 proven. 311 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2020-11-07 05:05:48,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108638600] [2020-11-07 05:05:48,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:48,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 05:05:48,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263074721] [2020-11-07 05:05:48,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:05:48,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:48,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:05:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:05:48,303 INFO L87 Difference]: Start difference. First operand 306 states and 430 transitions. Second operand 12 states. [2020-11-07 05:05:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:49,493 INFO L93 Difference]: Finished difference Result 632 states and 937 transitions. [2020-11-07 05:05:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:05:49,494 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 237 [2020-11-07 05:05:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:49,505 INFO L225 Difference]: With dead ends: 632 [2020-11-07 05:05:49,505 INFO L226 Difference]: Without dead ends: 625 [2020-11-07 05:05:49,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-11-07 05:05:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-11-07 05:05:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 589. [2020-11-07 05:05:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-11-07 05:05:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 874 transitions. [2020-11-07 05:05:49,638 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 874 transitions. Word has length 237 [2020-11-07 05:05:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:49,639 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 874 transitions. [2020-11-07 05:05:49,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:05:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 874 transitions. [2020-11-07 05:05:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-11-07 05:05:49,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:49,649 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 16, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:49,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:05:49,649 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 681448365, now seen corresponding path program 4 times [2020-11-07 05:05:49,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:49,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735743317] [2020-11-07 05:05:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-11-07 05:05:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-07 05:05:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 226 proven. 437 refuted. 0 times theorem prover too weak. 1625 trivial. 0 not checked. [2020-11-07 05:05:50,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735743317] [2020-11-07 05:05:50,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:50,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:05:50,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989071553] [2020-11-07 05:05:50,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:05:50,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:50,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:05:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:05:50,463 INFO L87 Difference]: Start difference. First operand 589 states and 874 transitions. Second operand 11 states. [2020-11-07 05:05:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:51,506 INFO L93 Difference]: Finished difference Result 1153 states and 1832 transitions. [2020-11-07 05:05:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 05:05:51,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 360 [2020-11-07 05:05:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:51,519 INFO L225 Difference]: With dead ends: 1153 [2020-11-07 05:05:51,520 INFO L226 Difference]: Without dead ends: 577 [2020-11-07 05:05:51,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:05:51,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-07 05:05:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 559. [2020-11-07 05:05:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-11-07 05:05:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 813 transitions. [2020-11-07 05:05:51,682 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 813 transitions. Word has length 360 [2020-11-07 05:05:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:51,683 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 813 transitions. [2020-11-07 05:05:51,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:05:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 813 transitions. [2020-11-07 05:05:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-11-07 05:05:51,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:51,694 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:51,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:05:51,695 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:51,695 INFO L82 PathProgramCache]: Analyzing trace with hash 239489881, now seen corresponding path program 5 times [2020-11-07 05:05:51,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:51,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315675581] [2020-11-07 05:05:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:05:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:05:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2534 backedges. 130 proven. 672 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2020-11-07 05:05:52,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315675581] [2020-11-07 05:05:52,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:52,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 05:05:52,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921333552] [2020-11-07 05:05:52,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 05:05:52,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 05:05:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:05:52,683 INFO L87 Difference]: Start difference. First operand 559 states and 813 transitions. Second operand 13 states. [2020-11-07 05:05:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:54,112 INFO L93 Difference]: Finished difference Result 1000 states and 1506 transitions. [2020-11-07 05:05:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 05:05:54,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 378 [2020-11-07 05:05:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:54,133 INFO L225 Difference]: With dead ends: 1000 [2020-11-07 05:05:54,133 INFO L226 Difference]: Without dead ends: 993 [2020-11-07 05:05:54,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-11-07 05:05:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-11-07 05:05:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 968. [2020-11-07 05:05:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-11-07 05:05:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1463 transitions. [2020-11-07 05:05:54,378 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1463 transitions. Word has length 378 [2020-11-07 05:05:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:54,379 INFO L481 AbstractCegarLoop]: Abstraction has 968 states and 1463 transitions. [2020-11-07 05:05:54,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 05:05:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1463 transitions. [2020-11-07 05:05:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-11-07 05:05:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:54,393 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 26, 26, 24, 22, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 11, 11, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:54,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 05:05:54,393 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1625274008, now seen corresponding path program 6 times [2020-11-07 05:05:54,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:54,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843027513] [2020-11-07 05:05:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:05:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:05:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:54,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:05:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 05:05:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 05:05:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:05:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:05:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:05:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:05:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:05:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:05:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 656 proven. 1021 refuted. 0 times theorem prover too weak. 3374 trivial. 0 not checked. [2020-11-07 05:05:55,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843027513] [2020-11-07 05:05:55,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:05:55,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 05:05:55,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620142878] [2020-11-07 05:05:55,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 05:05:55,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:05:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 05:05:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:05:55,855 INFO L87 Difference]: Start difference. First operand 968 states and 1463 transitions. Second operand 17 states. [2020-11-07 05:05:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:05:58,963 INFO L93 Difference]: Finished difference Result 2248 states and 3743 transitions. [2020-11-07 05:05:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-07 05:05:58,964 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 519 [2020-11-07 05:05:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:05:58,996 INFO L225 Difference]: With dead ends: 2248 [2020-11-07 05:05:58,996 INFO L226 Difference]: Without dead ends: 1294 [2020-11-07 05:05:59,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2020-11-07 05:05:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-11-07 05:05:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1160. [2020-11-07 05:05:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-11-07 05:05:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1766 transitions. [2020-11-07 05:05:59,313 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1766 transitions. Word has length 519 [2020-11-07 05:05:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:05:59,314 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1766 transitions. [2020-11-07 05:05:59,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 05:05:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1766 transitions. [2020-11-07 05:05:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-11-07 05:05:59,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:05:59,338 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 58, 58, 52, 49, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 23, 23, 16, 16, 15, 15, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:05:59,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 05:05:59,339 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:05:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:05:59,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1698844820, now seen corresponding path program 7 times [2020-11-07 05:05:59,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:05:59,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873729647] [2020-11-07 05:05:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:05:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:06:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:06:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:00,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 05:06:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-11-07 05:06:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25010 backedges. 1029 proven. 3863 refuted. 0 times theorem prover too weak. 20118 trivial. 0 not checked. [2020-11-07 05:06:03,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873729647] [2020-11-07 05:06:03,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:06:03,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-11-07 05:06:03,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666325527] [2020-11-07 05:06:03,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 05:06:03,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:06:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 05:06:03,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-11-07 05:06:03,767 INFO L87 Difference]: Start difference. First operand 1160 states and 1766 transitions. Second operand 19 states. [2020-11-07 05:06:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:06:07,376 INFO L93 Difference]: Finished difference Result 1835 states and 3029 transitions. [2020-11-07 05:06:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:06:07,377 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1118 [2020-11-07 05:06:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:06:07,390 INFO L225 Difference]: With dead ends: 1835 [2020-11-07 05:06:07,390 INFO L226 Difference]: Without dead ends: 616 [2020-11-07 05:06:07,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=402, Invalid=2460, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 05:06:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-11-07 05:06:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 474. [2020-11-07 05:06:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-11-07 05:06:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 654 transitions. [2020-11-07 05:06:07,530 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 654 transitions. Word has length 1118 [2020-11-07 05:06:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:06:07,530 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 654 transitions. [2020-11-07 05:06:07,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 05:06:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 654 transitions. [2020-11-07 05:06:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-11-07 05:06:07,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:06:07,538 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 30, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 13, 13, 9, 9, 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] [2020-11-07 05:06:07,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 05:06:07,539 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:06:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:06:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1560479542, now seen corresponding path program 8 times [2020-11-07 05:06:07,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:06:07,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287103995] [2020-11-07 05:06:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:06:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:06:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:06:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-11-07 05:06:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 05:06:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7866 backedges. 1594 proven. 1303 refuted. 0 times theorem prover too weak. 4969 trivial. 0 not checked. [2020-11-07 05:06:09,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287103995] [2020-11-07 05:06:09,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:06:09,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-11-07 05:06:09,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831074794] [2020-11-07 05:06:09,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-07 05:06:09,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:06:09,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-07 05:06:09,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-11-07 05:06:09,455 INFO L87 Difference]: Start difference. First operand 474 states and 654 transitions. Second operand 23 states. [2020-11-07 05:06:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:06:13,649 INFO L93 Difference]: Finished difference Result 1130 states and 1855 transitions. [2020-11-07 05:06:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:06:13,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 642 [2020-11-07 05:06:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:06:13,669 INFO L225 Difference]: With dead ends: 1130 [2020-11-07 05:06:13,669 INFO L226 Difference]: Without dead ends: 678 [2020-11-07 05:06:13,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=437, Invalid=2869, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 05:06:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-11-07 05:06:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 583. [2020-11-07 05:06:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-11-07 05:06:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 900 transitions. [2020-11-07 05:06:13,848 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 900 transitions. Word has length 642 [2020-11-07 05:06:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:06:13,849 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 900 transitions. [2020-11-07 05:06:13,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-07 05:06:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 900 transitions. [2020-11-07 05:06:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2020-11-07 05:06:13,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:06:13,859 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 37, 33, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 11, 11, 10, 10, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:06:13,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 05:06:13,859 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:06:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:06:13,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1327463788, now seen corresponding path program 9 times [2020-11-07 05:06:13,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:06:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422353774] [2020-11-07 05:06:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:06:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:06:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:06:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-11-07 05:06:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-11-07 05:06:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 05:06:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11918 backedges. 1025 proven. 2751 refuted. 0 times theorem prover too weak. 8142 trivial. 0 not checked. [2020-11-07 05:06:16,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422353774] [2020-11-07 05:06:16,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:06:16,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 05:06:16,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859958686] [2020-11-07 05:06:16,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 05:06:16,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:06:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 05:06:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:06:16,199 INFO L87 Difference]: Start difference. First operand 583 states and 900 transitions. Second operand 22 states. [2020-11-07 05:06:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:06:20,397 INFO L93 Difference]: Finished difference Result 1260 states and 2139 transitions. [2020-11-07 05:06:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 05:06:20,400 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 783 [2020-11-07 05:06:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:06:20,415 INFO L225 Difference]: With dead ends: 1260 [2020-11-07 05:06:20,415 INFO L226 Difference]: Without dead ends: 707 [2020-11-07 05:06:20,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=617, Invalid=3543, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 05:06:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-11-07 05:06:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 649. [2020-11-07 05:06:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-11-07 05:06:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 958 transitions. [2020-11-07 05:06:20,579 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 958 transitions. Word has length 783 [2020-11-07 05:06:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:06:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 649 states and 958 transitions. [2020-11-07 05:06:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 05:06:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 958 transitions. [2020-11-07 05:06:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-11-07 05:06:20,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:06:20,587 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] [2020-11-07 05:06:20,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 05:06:20,587 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:06:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:06:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1477670013, now seen corresponding path program 10 times [2020-11-07 05:06:20,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:06:20,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221273995] [2020-11-07 05:06:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:06:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:06:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:06:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 05:06:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 884 proven. 974 refuted. 0 times theorem prover too weak. 3155 trivial. 0 not checked. [2020-11-07 05:06:22,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221273995] [2020-11-07 05:06:22,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:06:22,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-11-07 05:06:22,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058622959] [2020-11-07 05:06:22,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 05:06:22,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:06:22,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 05:06:22,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-11-07 05:06:22,004 INFO L87 Difference]: Start difference. First operand 649 states and 958 transitions. Second operand 19 states. [2020-11-07 05:06:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:06:25,188 INFO L93 Difference]: Finished difference Result 1365 states and 2112 transitions. [2020-11-07 05:06:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:06:25,189 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 519 [2020-11-07 05:06:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:06:25,206 INFO L225 Difference]: With dead ends: 1365 [2020-11-07 05:06:25,206 INFO L226 Difference]: Without dead ends: 746 [2020-11-07 05:06:25,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=352, Invalid=2300, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 05:06:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-11-07 05:06:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 687. [2020-11-07 05:06:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-11-07 05:06:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1040 transitions. [2020-11-07 05:06:25,400 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1040 transitions. Word has length 519 [2020-11-07 05:06:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:06:25,401 INFO L481 AbstractCegarLoop]: Abstraction has 687 states and 1040 transitions. [2020-11-07 05:06:25,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 05:06:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1040 transitions. [2020-11-07 05:06:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-11-07 05:06:25,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:06:25,410 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] [2020-11-07 05:06:25,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 05:06:25,411 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:06:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:06:25,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1501432396, now seen corresponding path program 11 times [2020-11-07 05:06:25,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:06:25,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107719410] [2020-11-07 05:06:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:06:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:06:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 05:06:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 05:06:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-07 05:06:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-11-07 05:06:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 05:06:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 05:06:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:06:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-07 05:06:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 05:06:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:06:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10826 backedges. 1189 proven. 2172 refuted. 0 times theorem prover too weak. 7465 trivial. 0 not checked. [2020-11-07 05:06:27,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107719410] [2020-11-07 05:06:27,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:06:27,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-11-07 05:06:27,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957984171] [2020-11-07 05:06:27,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-07 05:06:27,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:06:27,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-07 05:06:27,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-11-07 05:06:27,817 INFO L87 Difference]: Start difference. First operand 687 states and 1040 transitions. Second operand 21 states. [2020-11-07 05:06:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:06:32,161 INFO L93 Difference]: Finished difference Result 1071 states and 1697 transitions. [2020-11-07 05:06:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-07 05:06:32,162 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 748 [2020-11-07 05:06:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:06:32,171 INFO L225 Difference]: With dead ends: 1071 [2020-11-07 05:06:32,171 INFO L226 Difference]: Without dead ends: 356 [2020-11-07 05:06:32,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=519, Invalid=3387, Unknown=0, NotChecked=0, Total=3906 [2020-11-07 05:06:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-11-07 05:06:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 320. [2020-11-07 05:06:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-11-07 05:06:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 453 transitions. [2020-11-07 05:06:32,255 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 453 transitions. Word has length 748 [2020-11-07 05:06:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:06:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 453 transitions. [2020-11-07 05:06:32,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-07 05:06:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 453 transitions. [2020-11-07 05:06:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-11-07 05:06:32,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:06:32,262 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] [2020-11-07 05:06:32,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 05:06:32,263 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:06:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:06:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1417613262, now seen corresponding path program 12 times [2020-11-07 05:06:32,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:06:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770359153] [2020-11-07 05:06:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:06:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:06:32,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:06:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:06:32,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:06:32,648 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:06:32,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:06:32,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 05:06:32,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:06:32 BoogieIcfgContainer [2020-11-07 05:06:32,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:06:32,893 INFO L168 Benchmark]: Toolchain (without parser) took 65266.25 ms. Allocated memory was 151.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 127.0 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 467.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:06:32,894 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:06:32,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:06:32,895 INFO L168 Benchmark]: Boogie Preprocessor took 37.06 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:06:32,895 INFO L168 Benchmark]: RCFGBuilder took 461.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 100.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:06:32,896 INFO L168 Benchmark]: TraceAbstraction took 64491.42 ms. Allocated memory was 151.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 99.9 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 439.8 MB. Max. memory is 8.0 GB. [2020-11-07 05:06:32,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.06 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 100.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 64491.42 ms. Allocated memory was 151.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 99.9 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 439.8 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: 64.1s, OverallIterations: 25, TraceHistogramMax: 67, AutomataDifference: 39.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1451 SDtfs, 3091 SDslu, 3378 SDs, 0 SdLazy, 13622 SolverSat, 1882 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2205 GetRequests, 1567 SyntacticMatches, 0 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5997 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1160occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 826 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 7518 NumberOfCodeBlocks, 7518 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 6887 ConstructedInterpolants, 0 QuantifiedInterpolants, 5533853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 60914/75616 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...