/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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-c90d42b [2020-09-24 15:57:47,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:57:47,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:57:47,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:57:47,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:57:47,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:57:47,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:57:47,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:57:47,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:57:47,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:57:47,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:57:47,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:57:47,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:57:47,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:57:47,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:57:47,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:57:47,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:57:47,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:57:47,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:57:47,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:57:47,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:57:47,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:57:47,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:57:47,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:57:47,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:57:47,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:57:47,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:57:47,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:57:47,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:57:47,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:57:47,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:57:47,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:57:47,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:57:47,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:57:47,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:57:47,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:57:47,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:57:47,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:57:47,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:57:47,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:57:47,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:57:47,949 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 [2020-09-24 15:57:47,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:57:47,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:57:47,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:57:47,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:57:47,988 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:57:47,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:57:47,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:57:47,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:57:47,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:57:47,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:57:47,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:57:47,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:57:47,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:57:47,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:57:47,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:57:47,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:57:47,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:57:47,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:57:47,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:57:47,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:57:47,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:57:47,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:57:47,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:57:47,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:57:47,993 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.rcfgbuilder: Size of a code block -> SingleStatement 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; [2020-09-24 15:57:48,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:57:48,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:57:48,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:57:48,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:57:48,457 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:57:48,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-24 15:57:48,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d621e64c/4032e80df96d4ebdb026584f1eb935af/FLAGd1017aad6 [2020-09-24 15:57:49,047 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:57:49,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-24 15:57:49,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d621e64c/4032e80df96d4ebdb026584f1eb935af/FLAGd1017aad6 [2020-09-24 15:57:49,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d621e64c/4032e80df96d4ebdb026584f1eb935af [2020-09-24 15:57:49,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:57:49,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:57:49,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:57:49,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:57:49,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:57:49,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d283ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49, skipping insertion in model container [2020-09-24 15:57:49,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:57:49,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:57:49,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:57:49,690 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:57:49,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:57:49,723 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:57:49,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49 WrapperNode [2020-09-24 15:57:49,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:57:49,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:57:49,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:57:49,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:57:49,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (1/1) ... [2020-09-24 15:57:49,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:57:49,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:57:49,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:57:49,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:57:49,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (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 [2020-09-24 15:57:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:57:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:57:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 15:57:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 15:57:49,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:57:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:57:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:57:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 15:57:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 15:57:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:57:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:57:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:57:50,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:57:50,152 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:57:50,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:57:50 BoogieIcfgContainer [2020-09-24 15:57:50,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:57:50,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:57:50,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:57:50,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:57:50,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:57:49" (1/3) ... [2020-09-24 15:57:50,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71028eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:57:50, skipping insertion in model container [2020-09-24 15:57:50,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:57:49" (2/3) ... [2020-09-24 15:57:50,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71028eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:57:50, skipping insertion in model container [2020-09-24 15:57:50,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:57:50" (3/3) ... [2020-09-24 15:57:50,169 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-09-24 15:57:50,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:57:50,195 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:57:50,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:57:50,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:57:50,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:57:50,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:57:50,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:57:50,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:57:50,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:57:50,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:57:50,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:57:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 15:57:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:57:50,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:50,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:50,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 15:57:50,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:50,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074454005] [2020-09-24 15:57:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,488 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,488 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:57:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:57:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:57:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:50,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:50,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,573 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,573 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:50,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:57:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:57:50,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074454005] [2020-09-24 15:57:50,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:57:50,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:57:50,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459199627] [2020-09-24 15:57:50,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:57:50,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:50,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:57:50,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:57:50,655 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 15:57:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:50,777 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 15:57:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:57:50,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:57:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:50,792 INFO L225 Difference]: With dead ends: 58 [2020-09-24 15:57:50,792 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:57:50,797 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 [2020-09-24 15:57:50,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:57:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 15:57:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:57:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 15:57:50,852 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 15:57:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:50,852 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 15:57:50,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:57:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 15:57:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 15:57:50,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:50,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:50,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:57:50,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:50,856 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 15:57:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:50,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037308525] [2020-09-24 15:57:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,876 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 15:57:50,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:57:50,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,906 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,906 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,906 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:50,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:50,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:50,930 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:50,935 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:50,935 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:57:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:57:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:57:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:57:50,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037308525] [2020-09-24 15:57:50,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:57:50,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:57:50,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434551632] [2020-09-24 15:57:50,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:57:50,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:57:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:57:50,980 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 15:57:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:51,045 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 15:57:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:57:51,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 15:57:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:51,047 INFO L225 Difference]: With dead ends: 50 [2020-09-24 15:57:51,048 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 15:57:51,049 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 [2020-09-24 15:57:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 15:57:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 15:57:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:57:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 15:57:51,059 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 15:57:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:51,060 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 15:57:51,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:57:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 15:57:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 15:57:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:51,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:51,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:57:51,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 15:57:51,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:51,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041016817] [2020-09-24 15:57:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 15:57:51,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:57:51,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:57:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,135 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,135 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,135 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,161 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,162 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,162 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 15:57:51,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:57:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:57:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 15:57:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:57:51,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:57:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,241 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:57:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:57:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:57:51,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041016817] [2020-09-24 15:57:51,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:57:51,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:57:51,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637913910] [2020-09-24 15:57:51,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:57:51,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:51,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:57:51,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:57:51,261 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-24 15:57:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:51,372 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 15:57:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:57:51,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 15:57:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:51,375 INFO L225 Difference]: With dead ends: 82 [2020-09-24 15:57:51,375 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 15:57:51,377 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 [2020-09-24 15:57:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 15:57:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 15:57:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 15:57:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 15:57:51,387 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 15:57:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:51,388 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 15:57:51,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:57:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 15:57:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:57:51,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:51,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:51,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:57:51,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:51,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 15:57:51,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:51,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692274940] [2020-09-24 15:57:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,466 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:57:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 15:57:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:57:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 15:57:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 15:57:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,534 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,535 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:57:51,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:57:51,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:57:51,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:57:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:57:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:57:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:57:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:57:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,680 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:57:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:57:51,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692274940] [2020-09-24 15:57:51,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:57:51,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 15:57:51,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438968882] [2020-09-24 15:57:51,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:57:51,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:51,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:57:51,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:57:51,709 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 9 states. [2020-09-24 15:57:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:51,859 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-09-24 15:57:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:57:51,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 15:57:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:51,863 INFO L225 Difference]: With dead ends: 66 [2020-09-24 15:57:51,863 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 15:57:51,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:57:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 15:57:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-09-24 15:57:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 15:57:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-24 15:57:51,875 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2020-09-24 15:57:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:51,876 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-24 15:57:51,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:57:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-24 15:57:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 15:57:51,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:51,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:51,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:57:51,878 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:51,879 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 15:57:51,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:51,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870762527] [2020-09-24 15:57:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,898 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,898 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,899 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 15:57:51,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:57:51,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 15:57:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,919 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,919 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,936 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 15:57:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:57:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:57:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 15:57:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:57:51,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:57:51,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:57:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:57:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:51,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:51,991 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:51,991 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:51,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:57:51,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:57:51,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:57:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:57:52,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870762527] [2020-09-24 15:57:52,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:57:52,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:57:52,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742392686] [2020-09-24 15:57:52,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:57:52,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:52,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:57:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:57:52,023 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 8 states. [2020-09-24 15:57:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:52,181 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-09-24 15:57:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:57:52,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 15:57:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:52,184 INFO L225 Difference]: With dead ends: 101 [2020-09-24 15:57:52,184 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 15:57:52,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:57:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 15:57:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 15:57:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 15:57:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 15:57:52,196 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 35 [2020-09-24 15:57:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:52,197 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 15:57:52,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:57:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 15:57:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 15:57:52,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:52,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:52,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:57:52,200 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:52,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-24 15:57:52,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:52,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556575393] [2020-09-24 15:57:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:57:52,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 15:57:52,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:57:52,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 15:57:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,264 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,264 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:57:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,290 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,290 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,291 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 15:57:52,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:57:52,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:57:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 15:57:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,334 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,334 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 15:57:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:57:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:57:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 15:57:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,369 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,369 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:52,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:57:52,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:57:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:57:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,420 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,422 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:57:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:57:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 15:57:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:57:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:57:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 15:57:52,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556575393] [2020-09-24 15:57:52,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:57:52,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:57:52,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61403966] [2020-09-24 15:57:52,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:57:52,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:52,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:57:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:57:52,448 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 15:57:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:52,537 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2020-09-24 15:57:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:57:52,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-24 15:57:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:52,538 INFO L225 Difference]: With dead ends: 104 [2020-09-24 15:57:52,539 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 15:57:52,540 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 [2020-09-24 15:57:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 15:57:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-24 15:57:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 15:57:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-09-24 15:57:52,549 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 50 [2020-09-24 15:57:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:52,549 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-09-24 15:57:52,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:57:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-09-24 15:57:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 15:57:52,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:57:52,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:57:52,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:57:52,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:57:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:57:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-24 15:57:52,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:57:52,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610210600] [2020-09-24 15:57:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:57:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:57:52,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 15:57:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 15:57:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:57:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,592 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:57:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:57:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:57:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 15:57:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,612 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:57:52,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,613 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:57:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 15:57:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:57:52,656 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,656 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:57:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:57:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:57:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:57:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:57:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:57:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:57:52,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:57:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:57:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:57:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:52,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:57:52,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:57:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:57:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:57:52,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:57:52,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:57:52,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:57:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:57:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:57:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:57:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:57:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:57:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:57:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:57:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:57:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:57:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 15:57:52,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610210600] [2020-09-24 15:57:52,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:57:52,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:57:52,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917249964] [2020-09-24 15:57:52,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:57:52,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:57:52,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:57:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:57:52,747 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 7 states. [2020-09-24 15:57:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:57:52,872 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-24 15:57:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:57:52,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-24 15:57:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:57:52,873 INFO L225 Difference]: With dead ends: 58 [2020-09-24 15:57:52,873 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:57:52,874 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 [2020-09-24 15:57:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:57:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:57:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:57:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:57:52,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-09-24 15:57:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:57:52,876 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:57:52,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:57:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:57:52,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:57:52,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:57:52,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:57:53,138 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:57:53,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:57:53,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:57:53,139 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:57:53,139 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:57:53,139 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:57:53,139 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-24 15:57:53,139 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-24 15:57:53,139 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-24 15:57:53,139 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-24 15:57:53,140 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 15:57:53,140 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-24 15:57:53,140 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 2) [2020-09-24 15:57:53,140 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 15:57:53,140 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-24 15:57:53,140 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 15:57:53,141 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-24 15:57:53,141 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-24 15:57:53,141 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))) [2020-09-24 15:57:53,141 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 15:57:53,141 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 15:57:53,141 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))) [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-24 15:57:53,142 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-24 15:57:53,143 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-24 15:57:53,143 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-24 15:57:53,143 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2020-09-24 15:57:53,143 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 15:57:53,143 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 15:57:53,143 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|)) [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-24 15:57:53,144 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 15:57:53,145 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-24 15:57:53,145 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-24 15:57:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:57:53 BoogieIcfgContainer [2020-09-24 15:57:53,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:57:53,155 INFO L168 Benchmark]: Toolchain (without parser) took 3743.25 ms. Allocated memory was 141.6 MB in the beginning and 243.8 MB in the end (delta: 102.2 MB). Free memory was 104.4 MB in the beginning and 108.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,156 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.26 ms. Allocated memory is still 141.6 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,158 INFO L168 Benchmark]: Boogie Preprocessor took 115.23 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 183.8 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,159 INFO L168 Benchmark]: RCFGBuilder took 318.04 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 170.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,160 INFO L168 Benchmark]: TraceAbstraction took 2992.39 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 169.4 MB in the beginning and 108.8 MB in the end (delta: 60.5 MB). Peak memory consumption was 99.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:57:53,164 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.26 ms. Allocated memory is still 141.6 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.23 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 183.8 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.04 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 170.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2992.39 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 169.4 MB in the beginning and 108.8 MB in the end (delta: 60.5 MB). Peak memory consumption was 99.3 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, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 291 SDtfs, 185 SDslu, 1065 SDs, 0 SdLazy, 357 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 65 PreInvPairs, 74 NumberOfFragments, 56 HoareAnnotationTreeSize, 65 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 21475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 26/49 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...