/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:21:17,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:21:17,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:21:17,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:21:17,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:21:17,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:21:17,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:21:17,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:21:17,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:21:17,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:21:17,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:21:17,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:21:17,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:21:17,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:21:17,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:21:17,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:21:17,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:21:17,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:21:17,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:21:17,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:21:17,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:21:17,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:21:17,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:21:17,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:21:17,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:21:17,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:21:17,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:21:17,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:21:17,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:21:17,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:21:17,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:21:17,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:21:17,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:21:17,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:21:17,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:21:17,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:21:17,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:21:17,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:21:17,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:21:17,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:21:17,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:21:17,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:21:17,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:21:17,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:21:17,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:21:17,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:21:17,983 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:21:17,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:21:17,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:21:17,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:21:17,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:21:17,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:21:17,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:21:17,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:21:17,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:21:17,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:21:17,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:21:17,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:21:17,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:21:17,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:21:17,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:21:17,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:21:17,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:21:17,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:17,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:21:17,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:21:17,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:21:17,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:21:17,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:21:17,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:21:17,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:21:17,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:21:18,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:21:18,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:21:18,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:21:18,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:21:18,492 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:21:18,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-21 11:21:18,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7996ebb3c/57b1121d43234ad1b9e8723667e2258a/FLAGcc8a07af6 [2020-09-21 11:21:19,098 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:21:19,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-21 11:21:19,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7996ebb3c/57b1121d43234ad1b9e8723667e2258a/FLAGcc8a07af6 [2020-09-21 11:21:19,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7996ebb3c/57b1121d43234ad1b9e8723667e2258a [2020-09-21 11:21:19,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:21:19,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:21:19,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:19,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:21:19,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:21:19,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f84b4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19, skipping insertion in model container [2020-09-21 11:21:19,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:21:19,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:21:19,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:19,763 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:21:19,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:19,792 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:21:19,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19 WrapperNode [2020-09-21 11:21:19,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:19,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:21:19,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:21:19,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:21:19,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... [2020-09-21 11:21:19,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:21:19,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:21:19,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:21:19,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:21:19,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:19,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:21:19,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:21:19,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-21 11:21:19,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-21 11:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:21:20,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:21:20,169 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:21:20,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:20 BoogieIcfgContainer [2020-09-21 11:21:20,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:21:20,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:21:20,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:21:20,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:21:20,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:21:19" (1/3) ... [2020-09-21 11:21:20,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:20, skipping insertion in model container [2020-09-21 11:21:20,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:19" (2/3) ... [2020-09-21 11:21:20,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:20, skipping insertion in model container [2020-09-21 11:21:20,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:20" (3/3) ... [2020-09-21 11:21:20,192 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-21 11:21:20,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:21:20,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:21:20,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:21:20,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:21:20,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:21:20,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:21:20,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:21:20,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:21:20,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:21:20,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:21:20,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:21:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-21 11:21:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:21:20,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:20,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:20,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-09-21 11:21:20,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:20,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462176506] [2020-09-21 11:21:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,489 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,489 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:21:20,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:21:20,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,560 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,560 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,561 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:20,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462176506] [2020-09-21 11:21:20,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:20,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:20,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373320953] [2020-09-21 11:21:20,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:20,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:20,659 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-21 11:21:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:20,767 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-09-21 11:21:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:20,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:21:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:20,784 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:21:20,784 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 11:21:20,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 11:21:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 11:21:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:21:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-09-21 11:21:20,851 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-09-21 11:21:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:20,852 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-09-21 11:21:20,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-09-21 11:21:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:21:20,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:20,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:20,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:21:20,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-09-21 11:21:20,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:20,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92542251] [2020-09-21 11:21:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,877 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:21:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:20,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,904 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,904 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,905 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:20,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:20,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:21:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:20,949 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:20,950 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:20,950 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:20,951 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:20,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:20,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:21:20,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:21,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92542251] [2020-09-21 11:21:21,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:21,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:21,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521587621] [2020-09-21 11:21:21,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:21,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:21,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:21,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:21,021 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-09-21 11:21:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:21,092 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-09-21 11:21:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:21,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:21:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:21,095 INFO L225 Difference]: With dead ends: 27 [2020-09-21 11:21:21,095 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:21:21,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:21:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-09-21 11:21:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:21:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-09-21 11:21:21,104 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-09-21 11:21:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:21,105 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-09-21 11:21:21,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-09-21 11:21:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:21:21,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:21,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:21,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:21:21,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-09-21 11:21:21,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:21,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879211412] [2020-09-21 11:21:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,140 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,141 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,141 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:21:21,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:21,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:21:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:21,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:21:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:21,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:21:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:21,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:21,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:21,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:21,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:21,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:21:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,268 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,269 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:21,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:21,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:21:21,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879211412] [2020-09-21 11:21:21,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:21,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:21,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457394193] [2020-09-21 11:21:21,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:21,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:21,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:21,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:21,282 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-09-21 11:21:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:21,387 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-09-21 11:21:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:21:21,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-21 11:21:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:21,389 INFO L225 Difference]: With dead ends: 38 [2020-09-21 11:21:21,389 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:21:21,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:21:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:21:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-21 11:21:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 11:21:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-09-21 11:21:21,410 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-09-21 11:21:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:21,411 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-09-21 11:21:21,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-09-21 11:21:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:21:21,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:21,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:21,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:21:21,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-09-21 11:21:21,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:21,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607035098] [2020-09-21 11:21:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:21:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:21:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,472 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,472 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,521 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,521 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,521 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:21,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:21:21,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,589 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,589 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,634 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,635 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,635 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:21:21,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607035098] [2020-09-21 11:21:21,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:21,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:21,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139615528] [2020-09-21 11:21:21,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:21,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:21,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:21,651 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-09-21 11:21:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:21,772 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-09-21 11:21:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:21:21,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 11:21:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:21,775 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:21:21,775 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:21:21,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:21:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 11:21:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:21:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-09-21 11:21:21,788 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-09-21 11:21:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:21,788 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-09-21 11:21:21,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-09-21 11:21:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:21:21,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:21,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:21,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:21:21,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-09-21 11:21:21,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:21,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186458640] [2020-09-21 11:21:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,819 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,819 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,819 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:21:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:21,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,841 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,841 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,841 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:21,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:21,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,870 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:21:21,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:21,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,979 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:21,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:21:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:21,993 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:21,993 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:21,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:21,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:21,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:22,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:22,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:21:22,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186458640] [2020-09-21 11:21:22,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:22,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:22,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923154570] [2020-09-21 11:21:22,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:22,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:22,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:22,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:22,052 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 9 states. [2020-09-21 11:21:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:22,189 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2020-09-21 11:21:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:22,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-21 11:21:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:22,192 INFO L225 Difference]: With dead ends: 79 [2020-09-21 11:21:22,192 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:21:22,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:21:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:21:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-21 11:21:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:21:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-09-21 11:21:22,205 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 40 [2020-09-21 11:21:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:22,206 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-09-21 11:21:22,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-09-21 11:21:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:21:22,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:22,208 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:22,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:21:22,209 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1111873851, now seen corresponding path program 3 times [2020-09-21 11:21:22,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:22,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142935105] [2020-09-21 11:21:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,230 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,230 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,282 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:22,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:22,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:22,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,365 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,366 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,366 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,366 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:22,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,385 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,386 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,386 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:22,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,394 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 11:21:22,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142935105] [2020-09-21 11:21:22,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:22,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:21:22,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330245696] [2020-09-21 11:21:22,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:21:22,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:21:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:22,406 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 8 states. [2020-09-21 11:21:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:22,563 INFO L93 Difference]: Finished difference Result 89 states and 145 transitions. [2020-09-21 11:21:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:21:22,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-21 11:21:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:22,566 INFO L225 Difference]: With dead ends: 89 [2020-09-21 11:21:22,566 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:21:22,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:21:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 11:21:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:21:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2020-09-21 11:21:22,579 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 41 [2020-09-21 11:21:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:22,580 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2020-09-21 11:21:22,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:21:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2020-09-21 11:21:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 11:21:22,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:22,584 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:22,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:21:22,584 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:22,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 4 times [2020-09-21 11:21:22,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:22,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56422345] [2020-09-21 11:21:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,619 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,646 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,646 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,647 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:22,688 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,688 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:21:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,742 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:22,742 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,742 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:22,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:22,786 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:22,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:22,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,827 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:22,828 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,828 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,828 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:22,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,854 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,855 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,855 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,864 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,864 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,864 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,885 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:22,885 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,886 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:22,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:22,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,928 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:22,928 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,928 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:22,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:22,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:22,998 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:22,998 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:22,998 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:22,999 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:22,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:22,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:23,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,019 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,019 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:23,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 68 proven. 117 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-21 11:21:23,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56422345] [2020-09-21 11:21:23,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:23,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 11:21:23,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343802482] [2020-09-21 11:21:23,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:21:23,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:23,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:21:23,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:23,063 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 11 states. [2020-09-21 11:21:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:23,421 INFO L93 Difference]: Finished difference Result 123 states and 204 transitions. [2020-09-21 11:21:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:21:23,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-09-21 11:21:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:23,425 INFO L225 Difference]: With dead ends: 123 [2020-09-21 11:21:23,425 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 11:21:23,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:21:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 11:21:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-09-21 11:21:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:21:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-21 11:21:23,437 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 82 [2020-09-21 11:21:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:23,437 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-21 11:21:23,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:21:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-21 11:21:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-21 11:21:23,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:23,440 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:23,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:21:23,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2020-09-21 11:21:23,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:23,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640326770] [2020-09-21 11:21:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,490 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:23,490 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 11:21:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,529 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,596 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:23,597 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:21:23,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 11:21:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-21 11:21:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,682 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:23,682 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,682 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:23,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:21:23,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:21:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:23,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,756 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:21:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:23,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:23,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:23,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,853 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:23,854 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,854 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:23,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:23,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,879 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:23,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,889 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,889 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,889 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,904 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,904 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,905 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:21:23,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,917 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,918 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,918 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:23,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:21:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:23,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:23,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:23,962 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:23,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:23,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:23,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:23,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:21:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,018 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:24,018 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,019 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,019 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:24,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:24,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:24,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,119 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,119 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,119 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,139 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,139 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,139 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:24,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:24,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:24,153 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:24,153 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:24,153 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:24,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 172 proven. 328 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2020-09-21 11:21:24,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640326770] [2020-09-21 11:21:24,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:24,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:21:24,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633724565] [2020-09-21 11:21:24,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:21:24,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:21:24,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:21:24,210 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 12 states. [2020-09-21 11:21:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:24,661 INFO L93 Difference]: Finished difference Result 115 states and 182 transitions. [2020-09-21 11:21:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:21:24,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-09-21 11:21:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:24,664 INFO L225 Difference]: With dead ends: 115 [2020-09-21 11:21:24,664 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:21:24,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:21:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:21:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-09-21 11:21:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 11:21:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2020-09-21 11:21:24,678 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 136 [2020-09-21 11:21:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:24,678 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2020-09-21 11:21:24,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:21:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2020-09-21 11:21:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 11:21:24,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:24,681 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:24,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:21:24,681 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:24,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 6 times [2020-09-21 11:21:24,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:24,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853935906] [2020-09-21 11:21:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:21:24,712 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:21:24,713 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:21:24,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:21:24,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:24 BoogieIcfgContainer [2020-09-21 11:21:24,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:24,752 INFO L168 Benchmark]: Toolchain (without parser) took 5269.29 ms. Allocated memory was 138.9 MB in the beginning and 296.2 MB in the end (delta: 157.3 MB). Free memory was 101.9 MB in the beginning and 113.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 146.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:24,752 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:21:24,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.20 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:24,754 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 ms. Allocated memory is still 138.9 MB. Free memory was 91.6 MB in the beginning and 90.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:24,755 INFO L168 Benchmark]: RCFGBuilder took 353.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 169.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:24,756 INFO L168 Benchmark]: TraceAbstraction took 4572.82 ms. Allocated memory was 201.3 MB in the beginning and 296.2 MB in the end (delta: 94.9 MB). Free memory was 168.7 MB in the beginning and 113.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 150.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:24,760 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.20 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.88 ms. Allocated memory is still 138.9 MB. Free memory was 91.6 MB in the beginning and 90.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 169.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4572.82 ms. Allocated memory was 201.3 MB in the beginning and 296.2 MB in the end (delta: 94.9 MB). Free memory was 168.7 MB in the beginning and 113.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 150.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int x = 5; [L25] CALL, EXPR fibo(x) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L25] RET, EXPR fibo(x) [L25] int result = fibo(x); [L26] COND TRUE result == 5 [L27] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 19, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 163 SDtfs, 215 SDslu, 465 SDs, 0 SdLazy, 766 SolverSat, 169 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 91593 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 860/1351 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...