/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_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:20:30,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:20:30,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:20:30,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:20:30,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:20:30,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:20:30,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:20:30,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:20:30,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:20:30,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:20:30,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:20:30,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:20:30,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:20:30,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:20:30,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:20:30,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:20:30,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:20:30,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:20:30,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:20:30,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:20:30,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:20:30,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:20:30,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:20:30,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:20:30,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:20:30,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:20:30,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:20:30,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:20:30,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:20:30,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:20:30,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:20:30,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:20:30,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:20:30,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:20:30,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:20:30,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:20:30,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:20:30,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:20:30,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:20:30,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:20:30,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:20:30,733 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 11:20:30,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:20:30,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:20:30,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:20:30,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:20:30,760 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:20:30,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:20:30,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:20:30,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:20:30,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:20:30,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:20:30,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:20:30,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:20:30,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:20:30,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:20:30,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:20:30,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:20:30,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:20:30,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:20:30,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:20:30,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:20:30,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:20:30,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:20:30,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:20:30,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:20:30,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:20:30,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:20:30,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:20:30,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:20:30,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:20:30,770 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 11:20:31,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:20:31,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:20:31,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:20:31,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:20:31,274 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:20:31,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-21 11:20:31,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10865c9d/32e4337e207541128a90dafd0057eed1/FLAG354725425 [2020-09-21 11:20:31,881 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:20:31,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-21 11:20:31,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10865c9d/32e4337e207541128a90dafd0057eed1/FLAG354725425 [2020-09-21 11:20:32,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10865c9d/32e4337e207541128a90dafd0057eed1 [2020-09-21 11:20:32,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:20:32,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:20:32,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:20:32,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:20:32,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:20:32,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337988d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32, skipping insertion in model container [2020-09-21 11:20:32,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:20:32,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:20:32,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:20:32,539 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:20:32,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:20:32,593 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:20:32,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32 WrapperNode [2020-09-21 11:20:32,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:20:32,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:20:32,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:20:32,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:20:32,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (1/1) ... [2020-09-21 11:20:32,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:20:32,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:20:32,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:20:32,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:20:32,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (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 11:20:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:20:32,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:20:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-21 11:20:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-21 11:20:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:20:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:20:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:20:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-21 11:20:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-21 11:20:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:20:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:20:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:20:33,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:20:33,083 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:20:33,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:33 BoogieIcfgContainer [2020-09-21 11:20:33,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:20:33,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:20:33,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:20:33,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:20:33,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:20:32" (1/3) ... [2020-09-21 11:20:33,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1501348d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:33, skipping insertion in model container [2020-09-21 11:20:33,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:32" (2/3) ... [2020-09-21 11:20:33,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1501348d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:33, skipping insertion in model container [2020-09-21 11:20:33,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:33" (3/3) ... [2020-09-21 11:20:33,098 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-09-21 11:20:33,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:20:33,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:20:33,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:20:33,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:20:33,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:20:33,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:20:33,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:20:33,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:20:33,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:20:33,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:20:33,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:20:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 11:20:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:20:33,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:33,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:33,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-21 11:20:33,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:33,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132722189] [2020-09-21 11:20:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,380 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,381 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:20:33,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:20:33,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,453 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,453 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,453 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:33,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:33,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:33,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:33,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:20:33,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:33,516 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 11:20:33,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132722189] [2020-09-21 11:20:33,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:20:33,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:20:33,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317210591] [2020-09-21 11:20:33,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:20:33,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:20:33,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:20:33,550 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-21 11:20:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:33,716 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-21 11:20:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:20:33,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:20:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:33,731 INFO L225 Difference]: With dead ends: 44 [2020-09-21 11:20:33,731 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:20:33,736 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 11:20:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:20:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 11:20:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:20:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:20:33,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-21 11:20:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:33,795 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:20:33,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:20:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:20:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:20:33,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:33,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:33,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:20:33,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-21 11:20:33,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:33,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208291201] [2020-09-21 11:20:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:20:33,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,858 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:33,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:33,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:33,880 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:33,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:33,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:33,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:20:33,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:33,915 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 11:20:33,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208291201] [2020-09-21 11:20:33,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:20:33,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:20:33,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861031478] [2020-09-21 11:20:33,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:20:33,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:33,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:20:33,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:20:33,920 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-21 11:20:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:33,992 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-21 11:20:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:20:33,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:20:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:33,995 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:20:33,995 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 11:20:33,996 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 11:20:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 11:20:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 11:20:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:20:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:20:34,006 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-21 11:20:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:34,006 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:20:34,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:20:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:20:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:20:34,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:34,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:34,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:20:34,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:34,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-21 11:20:34,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:34,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842743525] [2020-09-21 11:20:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,060 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,061 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,061 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:20:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:20:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:20:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,130 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:20:34,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:20:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,178 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,178 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:34,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:34,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:20:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,213 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:34,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:20:34,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842743525] [2020-09-21 11:20:34,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:34,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:20:34,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809207638] [2020-09-21 11:20:34,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:20:34,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:20:34,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:34,226 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-09-21 11:20:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:34,343 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-21 11:20:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:20:34,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-21 11:20:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:34,345 INFO L225 Difference]: With dead ends: 58 [2020-09-21 11:20:34,346 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:20:34,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:20:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:20:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 11:20:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:20:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-21 11:20:34,364 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-21 11:20:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:34,368 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-21 11:20:34,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:20:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-21 11:20:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:20:34,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:34,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:34,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:20:34,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-21 11:20:34,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:34,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591258823] [2020-09-21 11:20:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,475 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:20:34,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 11:20:34,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:20:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:20:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:20:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,555 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,555 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,612 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,613 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:20:34,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:20:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:20:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:20:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,718 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:20:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:20:34,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:20:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:20:34,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591258823] [2020-09-21 11:20:34,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:34,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:20:34,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672542286] [2020-09-21 11:20:34,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:20:34,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:20:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:20:34,785 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-09-21 11:20:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:34,864 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-09-21 11:20:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:20:34,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-21 11:20:34,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:34,867 INFO L225 Difference]: With dead ends: 46 [2020-09-21 11:20:34,867 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 11:20:34,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:20:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 11:20:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-09-21 11:20:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:20:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-09-21 11:20:34,879 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2020-09-21 11:20:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:34,880 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-09-21 11:20:34,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:20:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-09-21 11:20:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:20:34,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:34,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:34,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:20:34,882 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1725129826, now seen corresponding path program 1 times [2020-09-21 11:20:34,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:34,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943048226] [2020-09-21 11:20:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:20:34,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:20:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,920 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:34,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:20:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:34,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:20:34,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:20:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:34,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:34,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:34,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:34,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:34,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:20:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:20:35,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943048226] [2020-09-21 11:20:35,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:35,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:20:35,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586474654] [2020-09-21 11:20:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:20:35,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:35,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:20:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:20:35,019 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 8 states. [2020-09-21 11:20:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:35,205 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-09-21 11:20:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:20:35,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 11:20:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:35,207 INFO L225 Difference]: With dead ends: 71 [2020-09-21 11:20:35,208 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 11:20:35,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:20:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 11:20:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 11:20:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:20:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-09-21 11:20:35,218 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 28 [2020-09-21 11:20:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:35,219 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-09-21 11:20:35,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:20:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-09-21 11:20:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 11:20:35,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:35,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:35,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:20:35,222 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-09-21 11:20:35,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:35,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352726939] [2020-09-21 11:20:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:35,241 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:35,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:20:35,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:20:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,272 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,272 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,309 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:20:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:20:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:20:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:20:35,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:20:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:35,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:20:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:35,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:20:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,419 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:20:35,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352726939] [2020-09-21 11:20:35,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:35,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:20:35,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34312281] [2020-09-21 11:20:35,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:20:35,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:20:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:35,435 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2020-09-21 11:20:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:35,555 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2020-09-21 11:20:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:20:35,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-21 11:20:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:35,557 INFO L225 Difference]: With dead ends: 74 [2020-09-21 11:20:35,557 INFO L226 Difference]: Without dead ends: 41 [2020-09-21 11:20:35,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:20:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-21 11:20:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-21 11:20:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:20:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-21 11:20:35,572 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 39 [2020-09-21 11:20:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:35,575 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-21 11:20:35,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:20:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-21 11:20:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:20:35,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:35,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:35,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:20:35,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:35,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-09-21 11:20:35,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:35,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913614089] [2020-09-21 11:20:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:35,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,596 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:20:35,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:20:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,618 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,618 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,618 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:35,638 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,638 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:20:35,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:20:35,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 11:20:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:35,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:20:35,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:35,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:20:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,738 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:35,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:20:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,747 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:20:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:35,756 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:35,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:35,756 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:35,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:35,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:35,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:20:35,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913614089] [2020-09-21 11:20:35,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:35,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:20:35,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101073112] [2020-09-21 11:20:35,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:20:35,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:20:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:35,767 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-09-21 11:20:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:35,898 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2020-09-21 11:20:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:20:35,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-21 11:20:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:35,900 INFO L225 Difference]: With dead ends: 43 [2020-09-21 11:20:35,900 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:20:35,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:20:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:20:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:20:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:20:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:20:35,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-09-21 11:20:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:35,902 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:20:35,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:20:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:20:35,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:20:35,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:20:35,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:20:36,171 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:20:36,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:20:36,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:20:36,172 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:20:36,172 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:20:36,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:20:36,172 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-21 11:20:36,173 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-21 11:20:36,173 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-21 11:20:36,173 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-21 11:20:36,173 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-21 11:20:36,173 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-21 11:20:36,173 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 2) [2020-09-21 11:20:36,174 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-21 11:20:36,174 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-21 11:20:36,174 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-21 11:20:36,175 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= |fibo2_#in~n| fibo2_~n) (<= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-09-21 11:20:36,175 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-21 11:20:36,175 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (<= |fibo2_#in~n| fibo2_~n) (<= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-09-21 11:20:36,175 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-21 11:20:36,176 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-21 11:20:36,176 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-21 11:20:36,176 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-21 11:20:36,176 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-21 11:20:36,176 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-21 11:20:36,176 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2020-09-21 11:20:36,177 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-21 11:20:36,178 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (and (or (and (<= |fibo1_#t~ret0| 1) (< 1 fibo1_~n) (<= 1 |fibo1_#t~ret0|)) (<= 3 |fibo1_#in~n|)) (= fibo1_~n |fibo1_#in~n|)) [2020-09-21 11:20:36,178 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-21 11:20:36,178 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-21 11:20:36,178 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-21 11:20:36,178 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-21 11:20:36,178 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-21 11:20:36,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:20:36 BoogieIcfgContainer [2020-09-21 11:20:36,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:20:36,209 INFO L168 Benchmark]: Toolchain (without parser) took 3963.83 ms. Allocated memory was 141.0 MB in the beginning and 243.3 MB in the end (delta: 102.2 MB). Free memory was 103.5 MB in the beginning and 132.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:20:36,213 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:20:36,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.60 ms. Allocated memory is still 141.0 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:20:36,215 INFO L168 Benchmark]: Boogie Preprocessor took 139.19 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:20:36,217 INFO L168 Benchmark]: RCFGBuilder took 352.31 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:20:36,218 INFO L168 Benchmark]: TraceAbstraction took 3114.33 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 168.0 MB in the beginning and 132.6 MB in the end (delta: 35.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:20:36,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.60 ms. Allocated memory is still 141.0 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.19 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.31 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3114.33 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 168.0 MB in the beginning and 132.6 MB in the end (delta: 35.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 100 SDslu, 776 SDs, 0 SdLazy, 339 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 65 PreInvPairs, 74 NumberOfFragments, 56 HoareAnnotationTreeSize, 65 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 12782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 26/46 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 correct! Received shutdown request...