/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:21:24,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:21:24,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:21:24,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:21:24,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:21:24,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:21:24,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:21:24,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:21:24,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:21:24,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:21:24,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:21:24,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:21:24,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:21:24,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:21:24,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:21:24,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:21:24,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:21:24,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:21:24,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:21:24,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:21:24,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:21:24,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:21:24,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:21:24,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:21:24,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:21:24,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:21:24,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:21:24,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:21:24,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:21:24,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:21:24,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:21:24,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:21:24,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:21:24,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:21:24,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:21:24,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:21:24,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:21:24,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:21:24,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:21:24,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:21:24,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:21:24,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:21:24,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:21:24,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:21:24,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:21:24,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:21:24,452 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:21:24,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:21:24,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:21:24,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:21:24,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:21:24,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:21:24,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:21:24,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:21:24,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:21:24,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:21:24,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:21:24,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:21:24,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:21:24,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:21:24,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:21:24,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:21:24,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:21:24,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:24,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:21:24,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:21:24,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:21:24,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:21:24,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:21:24,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:21:24,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:21:24,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:21:24,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:21:24,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:21:24,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:21:24,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:21:24,987 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:21:24,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-21 11:21:25,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f93eef537/7a6006beb6174cfebed91bb07c88b23d/FLAGa74c759d5 [2020-09-21 11:21:25,655 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:21:25,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-21 11:21:25,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f93eef537/7a6006beb6174cfebed91bb07c88b23d/FLAGa74c759d5 [2020-09-21 11:21:26,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f93eef537/7a6006beb6174cfebed91bb07c88b23d [2020-09-21 11:21:26,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:21:26,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:21:26,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:26,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:21:26,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:21:26,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26, skipping insertion in model container [2020-09-21 11:21:26,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:21:26,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:21:26,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:26,299 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:21:26,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:26,330 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:21:26,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26 WrapperNode [2020-09-21 11:21:26,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:26,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:21:26,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:21:26,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:21:26,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... [2020-09-21 11:21:26,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:21:26,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:21:26,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:21:26,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:21:26,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:21:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:21:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-21 11:21:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:21:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:21:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:21:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-21 11:21:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:21:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:21:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:21:26,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:21:26,781 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:21:26,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:26 BoogieIcfgContainer [2020-09-21 11:21:26,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:21:26,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:21:26,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:21:26,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:21:26,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:21:26" (1/3) ... [2020-09-21 11:21:26,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef5fea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:26, skipping insertion in model container [2020-09-21 11:21:26,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:26" (2/3) ... [2020-09-21 11:21:26,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef5fea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:26, skipping insertion in model container [2020-09-21 11:21:26,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:26" (3/3) ... [2020-09-21 11:21:26,830 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-21 11:21:26,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:21:26,884 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:21:26,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:21:26,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:21:26,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:21:26,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:21:26,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:21:26,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:21:26,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:21:26,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:21:26,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:21:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-21 11:21:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:21:26,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:26,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:26,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-09-21 11:21:26,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:26,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775913540] [2020-09-21 11:21:26,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,139 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,139 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,139 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:21:27,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:21:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,203 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:27,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,226 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,226 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,226 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:27,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:27,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775913540] [2020-09-21 11:21:27,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:27,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:27,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351215699] [2020-09-21 11:21:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:27,298 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-21 11:21:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:27,423 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-09-21 11:21:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:27,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:21:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:27,441 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:21:27,441 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 11:21:27,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 11:21:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 11:21:27,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:21:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-09-21 11:21:27,497 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-09-21 11:21:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:27,497 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-09-21 11:21:27,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-09-21 11:21:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:21:27,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:27,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:27,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:21:27,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-09-21 11:21:27,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:27,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570084237] [2020-09-21 11:21:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,523 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,524 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:21:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:27,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,555 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,560 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:27,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,583 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,584 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:27,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:27,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:27,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570084237] [2020-09-21 11:21:27,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:27,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:27,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592639409] [2020-09-21 11:21:27,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:27,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:27,617 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-09-21 11:21:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:27,677 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-09-21 11:21:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:27,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:21:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:27,679 INFO L225 Difference]: With dead ends: 27 [2020-09-21 11:21:27,679 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:21:27,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:21:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-09-21 11:21:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:21:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-09-21 11:21:27,690 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-09-21 11:21:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:27,690 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-09-21 11:21:27,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-09-21 11:21:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:21:27,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:27,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:27,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:21:27,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-09-21 11:21:27,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:27,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883321044] [2020-09-21 11:21:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,729 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,729 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:21:27,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:21:27,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:27,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:27,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:21:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,770 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,770 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:27,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,800 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,801 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:21:27,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:27,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:21:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,842 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,842 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,843 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:27,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:27,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:21:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:27,877 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:27,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:27,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:27,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:27,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:21:27,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883321044] [2020-09-21 11:21:27,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:27,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:27,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716622862] [2020-09-21 11:21:27,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:27,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:27,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:27,891 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-09-21 11:21:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:28,027 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-09-21 11:21:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:21:28,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-21 11:21:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:28,029 INFO L225 Difference]: With dead ends: 38 [2020-09-21 11:21:28,029 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:21:28,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:21:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:21:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-21 11:21:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 11:21:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-09-21 11:21:28,039 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-09-21 11:21:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:28,040 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-09-21 11:21:28,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-09-21 11:21:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:21:28,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:28,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:28,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:21:28,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:28,044 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-09-21 11:21:28,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:28,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548063653] [2020-09-21 11:21:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:21:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:21:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:21:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:28,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,140 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,140 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,193 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:28,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:28,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:21:28,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548063653] [2020-09-21 11:21:28,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:28,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:28,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489154998] [2020-09-21 11:21:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:28,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:28,236 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-09-21 11:21:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:28,350 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-09-21 11:21:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:21:28,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 11:21:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:28,353 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:21:28,354 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:21:28,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:21:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 11:21:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:21:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-09-21 11:21:28,372 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-09-21 11:21:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:28,372 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-09-21 11:21:28,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-09-21 11:21:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:21:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:28,377 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:28,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:21:28,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-09-21 11:21:28,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:28,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373259433] [2020-09-21 11:21:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,444 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:21:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:21:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,490 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:21:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:21:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,628 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,685 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,686 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:28,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:28,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:28,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,701 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,701 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,702 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:28,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:28,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,724 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,724 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:28,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:21:28,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373259433] [2020-09-21 11:21:28,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:28,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:28,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890292465] [2020-09-21 11:21:28,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:28,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:28,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:28,768 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 9 states. [2020-09-21 11:21:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:28,935 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2020-09-21 11:21:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:28,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-21 11:21:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:28,938 INFO L225 Difference]: With dead ends: 79 [2020-09-21 11:21:28,938 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:21:28,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:21:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:21:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-21 11:21:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:21:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-09-21 11:21:28,952 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 40 [2020-09-21 11:21:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:28,953 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-09-21 11:21:28,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-09-21 11:21:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:21:28,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:28,956 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:28,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:21:28,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1111873851, now seen corresponding path program 3 times [2020-09-21 11:21:28,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:28,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809799480] [2020-09-21 11:21:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:28,980 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:28,980 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:28,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:28,981 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:28,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 11:21:28,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,002 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:29,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:29,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,030 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,031 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,134 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,134 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,135 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,135 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:29,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 11:21:29,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809799480] [2020-09-21 11:21:29,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:29,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:21:29,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552551574] [2020-09-21 11:21:29,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:21:29,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:21:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:29,160 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 8 states. [2020-09-21 11:21:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:29,300 INFO L93 Difference]: Finished difference Result 89 states and 145 transitions. [2020-09-21 11:21:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:21:29,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-21 11:21:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:29,303 INFO L225 Difference]: With dead ends: 89 [2020-09-21 11:21:29,303 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:21:29,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:21:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 11:21:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:21:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2020-09-21 11:21:29,318 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 41 [2020-09-21 11:21:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:29,318 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2020-09-21 11:21:29,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:21:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2020-09-21 11:21:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 11:21:29,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:29,327 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:29,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:21:29,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 4 times [2020-09-21 11:21:29,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:29,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617564508] [2020-09-21 11:21:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,362 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,363 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,363 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:21:29,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,392 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,393 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,393 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:29,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:29,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:29,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:29,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,438 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:29,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,439 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 11:21:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:21:29,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:21:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:29,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:29,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:21:29,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,555 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:29,555 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:29,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:29,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,591 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:29,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:29,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,620 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:29,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:29,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:29,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:29,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:29,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:29,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:29,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,764 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,774 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,774 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:29,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:29,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:29,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:29,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:29,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:29,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:29,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:29,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 68 proven. 117 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-21 11:21:29,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617564508] [2020-09-21 11:21:29,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:29,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 11:21:29,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010346173] [2020-09-21 11:21:29,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:21:29,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:21:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:29,827 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 11 states. [2020-09-21 11:21:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:30,212 INFO L93 Difference]: Finished difference Result 123 states and 204 transitions. [2020-09-21 11:21:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:21:30,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-09-21 11:21:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:30,219 INFO L225 Difference]: With dead ends: 123 [2020-09-21 11:21:30,219 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 11:21:30,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:21:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 11:21:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-09-21 11:21:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:21:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-21 11:21:30,238 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 82 [2020-09-21 11:21:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:30,242 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-21 11:21:30,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:21:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-21 11:21:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-21 11:21:30,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:30,252 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:30,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:21:30,252 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2020-09-21 11:21:30,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:30,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897920000] [2020-09-21 11:21:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,302 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:21:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:21:30,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:21:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:30,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:30,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 11:21:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 11:21:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:21:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 11:21:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:30,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,540 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:21:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:30,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:30,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:21:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:30,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:30,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:30,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,775 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,776 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,776 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:30,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:30,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,799 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,799 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,799 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:30,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:30,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,812 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,813 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,813 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:30,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,819 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:30,819 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,820 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:30,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:30,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:21:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,861 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:30,861 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,861 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:21:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:30,920 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,920 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:30,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:30,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:30,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:30,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:30,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,064 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,064 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,073 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,073 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:31,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,083 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,083 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,096 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:31,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,106 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,106 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,106 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:31,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:31,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 180 proven. 346 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-09-21 11:21:31,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897920000] [2020-09-21 11:21:31,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:31,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 11:21:31,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540059833] [2020-09-21 11:21:31,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 11:21:31,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:31,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 11:21:31,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:21:31,176 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 14 states. [2020-09-21 11:21:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:31,770 INFO L93 Difference]: Finished difference Result 115 states and 182 transitions. [2020-09-21 11:21:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:21:31,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2020-09-21 11:21:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:31,774 INFO L225 Difference]: With dead ends: 115 [2020-09-21 11:21:31,774 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:21:31,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:21:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:21:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-09-21 11:21:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-21 11:21:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-21 11:21:31,789 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 136 [2020-09-21 11:21:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:31,790 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-21 11:21:31,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 11:21:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-21 11:21:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-21 11:21:31,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:31,796 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:31,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:21:31,797 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 706081956, now seen corresponding path program 6 times [2020-09-21 11:21:31,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:31,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235899268] [2020-09-21 11:21:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,878 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,879 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-21 11:21:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 11:21:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:21:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 11:21:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:31,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:31,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:31,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:31,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:31,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:31,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,131 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,131 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-21 11:21:32,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 11:21:32,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 11:21:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-21 11:21:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:32,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 11:21:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 11:21:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-21 11:21:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,364 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:32,364 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,364 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:32,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:21:32,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:21:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:21:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,434 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:32,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,435 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,435 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:21:32,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:32,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:32,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:32,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,530 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,531 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,531 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:32,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,560 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,560 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:32,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,583 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:32,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:32,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:32,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:32,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,599 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,599 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:32,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:21:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,619 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,632 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,632 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:32,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,649 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,649 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,649 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:32,656 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,656 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:32,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 11:21:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,712 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,712 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,712 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 11:21:32,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:32,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-21 11:21:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,791 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:32,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:21:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:21:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,855 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,855 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,856 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:21:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:32,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:32,928 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:32,928 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:32,929 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:32,929 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:32,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:32,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,080 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,081 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:33,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:33,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,091 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,104 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:33,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:33,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:33,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,119 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,120 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,120 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:21:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,140 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,140 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:33,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,151 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:33,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,164 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,164 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:33,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:33,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:33,170 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:33,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:33,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:33,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:33,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:33,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:33,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:33,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 394 proven. 807 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2020-09-21 11:21:33,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235899268] [2020-09-21 11:21:33,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:33,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 11:21:33,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898487782] [2020-09-21 11:21:33,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:21:33,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:33,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:21:33,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:21:33,295 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 15 states. [2020-09-21 11:21:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:34,027 INFO L93 Difference]: Finished difference Result 144 states and 234 transitions. [2020-09-21 11:21:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 11:21:34,027 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 218 [2020-09-21 11:21:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:34,030 INFO L225 Difference]: With dead ends: 144 [2020-09-21 11:21:34,030 INFO L226 Difference]: Without dead ends: 91 [2020-09-21 11:21:34,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2020-09-21 11:21:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-21 11:21:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-09-21 11:21:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 11:21:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2020-09-21 11:21:34,061 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 218 [2020-09-21 11:21:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:34,062 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2020-09-21 11:21:34,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:21:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2020-09-21 11:21:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-21 11:21:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:34,070 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:34,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:21:34,070 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:34,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 7 times [2020-09-21 11:21:34,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90411476] [2020-09-21 11:21:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:21:34,156 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:21:34,156 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:21:34,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:21:34,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:34 BoogieIcfgContainer [2020-09-21 11:21:34,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:34,249 INFO L168 Benchmark]: Toolchain (without parser) took 8227.68 ms. Allocated memory was 145.2 MB in the beginning and 330.8 MB in the end (delta: 185.6 MB). Free memory was 101.5 MB in the beginning and 188.3 MB in the end (delta: -86.8 MB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:34,253 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:21:34,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.36 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:34,255 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 ms. Allocated memory is still 145.2 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:34,260 INFO L168 Benchmark]: RCFGBuilder took 423.96 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 168.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:34,262 INFO L168 Benchmark]: TraceAbstraction took 7443.01 ms. Allocated memory was 200.8 MB in the beginning and 330.8 MB in the end (delta: 130.0 MB). Free memory was 167.3 MB in the beginning and 188.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:34,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.36 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 145.2 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.96 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 168.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7443.01 ms. Allocated memory was 200.8 MB in the beginning and 330.8 MB in the end (delta: 130.0 MB). Free memory was 167.3 MB in the beginning and 188.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int x = 7; [L25] CALL, EXPR fibo(x) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L25] RET, EXPR fibo(x) [L25] int result = fibo(x); [L26] COND TRUE result == 13 [L27] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 41, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 198 SDtfs, 297 SDslu, 679 SDs, 0 SdLazy, 1230 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 187 SyntacticMatches, 8 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 883 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 231047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 2615/3931 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...