/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:39:41,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:39:41,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:39:41,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:39:41,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:39:41,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:39:41,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:39:41,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:39:41,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:39:41,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:39:41,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:39:41,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:39:41,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:39:41,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:39:41,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:39:41,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:39:41,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:39:41,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:39:41,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:39:41,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:39:41,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:39:41,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:39:41,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:39:41,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:39:41,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:39:41,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:39:41,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:39:41,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:39:41,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:39:41,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:39:41,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:39:41,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:39:41,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:39:41,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:39:41,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:39:41,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:39:41,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:39:41,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:39:41,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:39:41,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:39:41,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:39:41,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:39:42,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:39:42,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:39:42,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:39:42,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:39:42,026 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:39:42,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:39:42,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:39:42,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:39:42,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:39:42,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:39:42,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:39:42,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:39:42,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:39:42,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:39:42,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:39:42,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:39:42,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:39:42,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:39:42,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:39:42,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:39:42,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:39:42,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:39:42,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:39:42,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:39:42,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:39:42,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:39:42,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:39:42,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:39:42,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:39:42,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:39:42,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:39:42,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:39:42,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:39:42,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:39:42,518 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:39:42,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-24 22:39:42,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263d2219f/e12ae33a7a624ec5a837aa8cfd02920d/FLAG57257ff4a [2020-09-24 22:39:43,111 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:39:43,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-24 22:39:43,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263d2219f/e12ae33a7a624ec5a837aa8cfd02920d/FLAG57257ff4a [2020-09-24 22:39:43,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263d2219f/e12ae33a7a624ec5a837aa8cfd02920d [2020-09-24 22:39:43,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:39:43,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:39:43,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:43,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:39:43,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:39:43,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43, skipping insertion in model container [2020-09-24 22:39:43,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:39:43,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:39:43,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:43,735 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:39:43,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:43,775 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:39:43,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43 WrapperNode [2020-09-24 22:39:43,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:43,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:39:43,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:39:43,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:39:43,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... [2020-09-24 22:39:43,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:39:43,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:39:43,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:39:43,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:39:43,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:39:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:39:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:39:44,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:39:44,232 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:39:44,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:44 BoogieIcfgContainer [2020-09-24 22:39:44,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:39:44,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:39:44,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:39:44,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:39:44,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:39:43" (1/3) ... [2020-09-24 22:39:44,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6410b951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:44, skipping insertion in model container [2020-09-24 22:39:44,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:43" (2/3) ... [2020-09-24 22:39:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6410b951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:44, skipping insertion in model container [2020-09-24 22:39:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:44" (3/3) ... [2020-09-24 22:39:44,249 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-2.c [2020-09-24 22:39:44,264 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:39:44,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:39:44,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:39:44,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:39:44,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:39:44,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:39:44,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:39:44,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:39:44,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:39:44,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:39:44,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:39:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:39:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:39:44,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:44,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:44,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:44,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:39:44,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:44,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589998682] [2020-09-24 22:39:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:39:44,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 22:39:44,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:39:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:44,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:39:44,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589998682] [2020-09-24 22:39:44,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:44,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:44,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691198290] [2020-09-24 22:39:44,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:44,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:44,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:44,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:44,888 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:39:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:45,006 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:39:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:45,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:39:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:45,023 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:39:45,023 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:39:45,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:39:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:39:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:45,087 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:39:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:45,087 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:45,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:39:45,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:45,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:45,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:39:45,091 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:45,092 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:39:45,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:45,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892558311] [2020-09-24 22:39:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:39:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 22:39:45,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:45,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:45,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 22:39:45,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:39:45,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892558311] [2020-09-24 22:39:45,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:45,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:45,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751140367] [2020-09-24 22:39:45,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:45,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:45,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:45,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:45,344 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:39:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:45,419 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:39:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:45,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:39:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:45,422 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:39:45,422 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:39:45,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:39:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:39:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:45,434 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:39:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:45,434 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:45,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:39:45,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:45,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:45,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:39:45,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:39:45,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:45,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973389621] [2020-09-24 22:39:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 22:39:45,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:39:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:46,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:46,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 22:39:46,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:46,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973389621] [2020-09-24 22:39:46,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:46,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:46,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609764452] [2020-09-24 22:39:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:46,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:46,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:46,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:46,165 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 22:39:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:46,252 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:46,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:39:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:46,255 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:46,255 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:46,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:46,268 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:46,269 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:46,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:46,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:46,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:46,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:46,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:46,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116409678] [2020-09-24 22:39:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 22:39:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:46,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:46,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:46,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 22:39:46,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:47,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:47,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:47,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:39:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:47,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116409678] [2020-09-24 22:39:47,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:47,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:39:47,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617564788] [2020-09-24 22:39:47,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:47,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:47,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:47,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:47,102 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 22:39:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:47,216 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 22:39:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:47,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:39:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:47,218 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:39:47,219 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:39:47,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:39:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 22:39:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 22:39:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 22:39:47,229 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 22:39:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:47,229 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 22:39:47,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 22:39:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:47,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:47,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:47,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:47,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:47,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:47,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735605707] [2020-09-24 22:39:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:47,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-24 22:39:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:39:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:47,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:48,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:39:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:39:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:48,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735605707] [2020-09-24 22:39:48,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:48,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101556097] [2020-09-24 22:39:48,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:48,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:48,097 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2020-09-24 22:39:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:48,187 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2020-09-24 22:39:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:48,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:39:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:48,190 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:39:48,191 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 22:39:48,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 22:39:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-24 22:39:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-24 22:39:48,218 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 35 [2020-09-24 22:39:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:48,218 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-24 22:39:48,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-24 22:39:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:48,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:48,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:48,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:48,229 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-24 22:39:48,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:48,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371404856] [2020-09-24 22:39:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:52,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:52,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-09-24 22:39:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:39:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:52,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:52,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:52,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 22:39:53,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:39:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:53,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:53,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:53,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 22:39:53,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:53,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:53,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:39:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:53,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371404856] [2020-09-24 22:39:53,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:53,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:53,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105393555] [2020-09-24 22:39:53,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:53,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:53,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:53,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:53,358 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-09-24 22:39:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:53,482 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:53,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 22:39:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:53,484 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:53,484 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:53,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-24 22:39:53,508 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-24 22:39:53,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:53,510 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-24 22:39:53,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-24 22:39:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:53,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:53,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:53,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:53,516 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 1 times [2020-09-24 22:39:53,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:53,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084805202] [2020-09-24 22:39:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:56,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-09-24 22:39:56,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:56,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:56,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 22:39:56,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:56,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:56,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 22:39:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:57,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:39:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:39:57,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084805202] [2020-09-24 22:39:57,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:57,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:57,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531379368] [2020-09-24 22:39:57,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:57,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:57,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:57,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:57,357 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-24 22:39:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:57,678 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2020-09-24 22:39:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:57,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:39:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:57,683 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:39:57,683 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 22:39:57,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 22:39:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-24 22:39:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:39:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-09-24 22:39:57,714 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 52 [2020-09-24 22:39:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:57,715 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-09-24 22:39:57,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-09-24 22:39:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:57,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:57,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:57,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:57,718 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 2 times [2020-09-24 22:39:57,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:57,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127354809] [2020-09-24 22:39:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:59,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-09-24 22:39:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:59,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-09-24 22:40:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:40:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:01,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:40:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:01,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:01,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:01,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:01,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:40:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 22:40:01,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127354809] [2020-09-24 22:40:01,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:01,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:40:01,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401548245] [2020-09-24 22:40:01,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:40:01,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:40:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:40:01,375 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-09-24 22:40:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:01,507 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2020-09-24 22:40:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:40:01,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:40:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:01,510 INFO L225 Difference]: With dead ends: 86 [2020-09-24 22:40:01,510 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:40:01,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:40:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-24 22:40:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:40:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-09-24 22:40:01,535 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 52 [2020-09-24 22:40:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:01,536 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-09-24 22:40:01,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:40:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-09-24 22:40:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:40:01,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:01,538 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:01,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:40:01,538 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 22:40:01,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:01,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749178524] [2020-09-24 22:40:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:40:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:40:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:06,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:06,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:40:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:40:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:40:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:40:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:11,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:40:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:11,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:11,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:40:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:12,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:40:12,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749178524] [2020-09-24 22:40:12,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:12,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:40:12,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722895897] [2020-09-24 22:40:12,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:40:12,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:40:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:12,199 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 11 states. [2020-09-24 22:40:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:12,466 INFO L93 Difference]: Finished difference Result 182 states and 270 transitions. [2020-09-24 22:40:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:40:12,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-24 22:40:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:12,469 INFO L225 Difference]: With dead ends: 182 [2020-09-24 22:40:12,469 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 22:40:12,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:40:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 22:40:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 96. [2020-09-24 22:40:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-24 22:40:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2020-09-24 22:40:12,482 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 69 [2020-09-24 22:40:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:12,483 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2020-09-24 22:40:12,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:40:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2020-09-24 22:40:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:40:12,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:12,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:12,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:40:12,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 589230722, now seen corresponding path program 1 times [2020-09-24 22:40:12,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:12,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734663926] [2020-09-24 22:40:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 22:40:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 22:40:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 22:40:17,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:40:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:17,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:17,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:21,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 22:40:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:22,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:22,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:22,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:22,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:23,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:40:23,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:23,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:23,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 22:40:23,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:23,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:40:23,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:23,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:23,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:23,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:23,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 22:40:23,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734663926] [2020-09-24 22:40:23,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:23,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:23,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669399329] [2020-09-24 22:40:23,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:23,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:23,988 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand 9 states. [2020-09-24 22:40:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:24,240 INFO L93 Difference]: Finished difference Result 186 states and 270 transitions. [2020-09-24 22:40:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:40:24,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-24 22:40:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:24,242 INFO L225 Difference]: With dead ends: 186 [2020-09-24 22:40:24,242 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 22:40:24,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:40:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 22:40:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-09-24 22:40:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 22:40:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2020-09-24 22:40:24,259 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 86 [2020-09-24 22:40:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:24,260 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2020-09-24 22:40:24,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2020-09-24 22:40:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 22:40:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:24,266 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:24,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:40:24,266 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 22:40:24,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:24,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205363554] [2020-09-24 22:40:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:40:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:29,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 22:40:34,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 22:40:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:40:34,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:40:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:40:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:35,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:35,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:40:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:35,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:35,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:35,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:35,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:35,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:35,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:35,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:35,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:40:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:40:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking...