/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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:52,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:52,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:52,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:52,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:52,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:52,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:52,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:52,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:52,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:52,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:52,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:52,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:52,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:52,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:52,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:52,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:52,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:52,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:52,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:52,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:52,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:52,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:52,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:52,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:52,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:52,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:52,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:52,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:52,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:52,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:52,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:53,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:53,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:53,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:53,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:53,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:53,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:53,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:53,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:53,006 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 22:38:53,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:53,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:53,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:53,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:53,034 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:53,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:53,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:53,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:53,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:53,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:53,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:53,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:53,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:53,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:53,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:53,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:53,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:53,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:53,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:53,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:53,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:53,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:53,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:53,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:53,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:53,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:53,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:53,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:53,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:53,039 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 22:38:53,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:53,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:53,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:53,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:53,501 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:53,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-24 22:38:53,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37da88b93/a768946629954c6a922ccbd3ffe294ad/FLAGe5609b3fe [2020-09-24 22:38:54,047 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:54,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-24 22:38:54,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37da88b93/a768946629954c6a922ccbd3ffe294ad/FLAGe5609b3fe [2020-09-24 22:38:54,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37da88b93/a768946629954c6a922ccbd3ffe294ad [2020-09-24 22:38:54,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:54,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:54,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:54,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:54,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:54,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54, skipping insertion in model container [2020-09-24 22:38:54,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:54,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:54,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:54,701 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:54,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:54,739 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:54,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54 WrapperNode [2020-09-24 22:38:54,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:54,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:54,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:54,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:54,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (1/1) ... [2020-09-24 22:38:54,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:54,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:54,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:54,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:54,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (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 22:38:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:55,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:55,200 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:55,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:55 BoogieIcfgContainer [2020-09-24 22:38:55,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:55,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:55,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:55,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:55,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:54" (1/3) ... [2020-09-24 22:38:55,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:55, skipping insertion in model container [2020-09-24 22:38:55,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:54" (2/3) ... [2020-09-24 22:38:55,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:55, skipping insertion in model container [2020-09-24 22:38:55,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:55" (3/3) ... [2020-09-24 22:38:55,238 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2020-09-24 22:38:55,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:55,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:55,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:55,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:55,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:55,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:55,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:55,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:55,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:55,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:55,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:38:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:55,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:55,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:55,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:55,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:38:55,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:55,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-24 22:38:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:55,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 22:38:55,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:55,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:55,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:55,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:38:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:55,668 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 22:38:55,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-24 22:38:55,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:55,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:55,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611511239] [2020-09-24 22:38:55,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:55,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:55,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:55,702 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:38:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:55,830 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:38:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:55,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:55,845 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:38:55,846 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:38:55,850 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 22:38:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:38:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:38:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:38:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:38:55,904 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:38:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:55,905 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:38:55,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:38:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:55,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:55,908 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 22:38:55,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:55,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:38:55,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:55,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611612938] [2020-09-24 22:38:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 22:38:56,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:38:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:56,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 22:38:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:56,199 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 22:38:56,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611612938] [2020-09-24 22:38:56,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:56,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:56,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605172160] [2020-09-24 22:38:56,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:56,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:56,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:56,204 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:38:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:56,276 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:38:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:56,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:56,278 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:38:56,279 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:38:56,280 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 22:38:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:38:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:38:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:38:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:38:56,291 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:38:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:56,291 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:38:56,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:38:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:56,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:56,294 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 22:38:56,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:56,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:56,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:38:56,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:56,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022856626] [2020-09-24 22:38:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:56,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-09-24 22:38:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:38:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:56,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:56,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 22:38:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:56,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:56,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:56,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:38:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,003 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 22:38:57,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022856626] [2020-09-24 22:38:57,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:57,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:38:57,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212041010] [2020-09-24 22:38:57,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:38:57,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:57,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:38:57,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:57,006 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 22:38:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:57,078 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:38:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:57,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:38:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:57,081 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:38:57,081 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:57,083 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 22:38:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:38:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:38:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:38:57,093 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:38:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:57,093 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:38:57,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:38:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:38:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:57,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:57,096 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 22:38:57,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:57,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:38:57,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:57,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641333151] [2020-09-24 22:38:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-24 22:38:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:57,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-24 22:38:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:38:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:57,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:57,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,977 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 22:38:57,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641333151] [2020-09-24 22:38:57,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:57,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:38:57,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989057228] [2020-09-24 22:38:57,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:57,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:57,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:57,980 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 22:38:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:58,130 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 22:38:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:38:58,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:38:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:58,133 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:38:58,133 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:38:58,134 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 22:38:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:38:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 22:38:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 22:38:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 22:38:58,143 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 22:38:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:58,144 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 22:38:58,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 22:38:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:58,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:58,146 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 22:38:58,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:58,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:38:58,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:58,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120461054] [2020-09-24 22:38:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-24 22:38:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:38:58,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 22:38:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:38:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 22:38:58,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:58,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,847 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 22:38:58,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120461054] [2020-09-24 22:38:58,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:58,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:58,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347442635] [2020-09-24 22:38:58,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:58,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:58,850 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2020-09-24 22:38:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:58,912 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2020-09-24 22:38:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:58,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:38:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:58,915 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:38:58,915 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 22:38:58,916 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 22:38:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 22:38:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-24 22:38:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:38:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-24 22:38:58,927 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 35 [2020-09-24 22:38:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:58,928 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-24 22:38:58,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-24 22:38:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:38:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:58,931 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 22:38:58,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:58,931 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-24 22:38:58,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:58,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083958392] [2020-09-24 22:38:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:03,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4132 [2020-09-24 22:39:03,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:39:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:03,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 22:39:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:39:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:03,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:03,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:03,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 22:39:03,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:03,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,615 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 22:39:03,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083958392] [2020-09-24 22:39:03,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:03,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:03,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085414964] [2020-09-24 22:39:03,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:03,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:03,618 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-09-24 22:39:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:03,704 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:03,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 22:39:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:03,706 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:03,706 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:03,708 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 22:39:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-24 22:39:03,724 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-24 22:39:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:03,727 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-24 22:39:03,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-24 22:39:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:03,734 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 22:39:03,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:03,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 1 times [2020-09-24 22:39:03,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599041352] [2020-09-24 22:39:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2806 [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 22:39:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:07,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:07,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 22:39:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:39:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,372 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 22:39:07,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599041352] [2020-09-24 22:39:07,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:07,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:07,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86694446] [2020-09-24 22:39:07,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:07,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:07,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:07,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:07,375 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-24 22:39:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:07,593 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2020-09-24 22:39:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:07,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:39:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:07,595 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:39:07,595 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 22:39:07,596 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 22:39:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 22:39:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-24 22:39:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:39:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-09-24 22:39:07,610 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 52 [2020-09-24 22:39:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:07,610 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-09-24 22:39:07,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-09-24 22:39:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:07,613 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 22:39:07,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:07,613 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 2 times [2020-09-24 22:39:07,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:07,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598471033] [2020-09-24 22:39:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-09-24 22:39:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-09-24 22:39:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 22:39:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:10,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:10,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:10,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:11,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:11,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:11,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:11,036 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 22:39:11,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598471033] [2020-09-24 22:39:11,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:11,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:11,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135950822] [2020-09-24 22:39:11,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:11,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:11,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:11,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:11,040 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-09-24 22:39:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:11,164 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2020-09-24 22:39:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:11,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:39:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:11,167 INFO L225 Difference]: With dead ends: 86 [2020-09-24 22:39:11,167 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:39:11,167 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 22:39:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:39:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-24 22:39:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-09-24 22:39:11,188 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 52 [2020-09-24 22:39:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:11,191 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-09-24 22:39:11,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-09-24 22:39:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:11,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:11,193 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 22:39:11,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:11,194 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:11,194 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 22:39:11,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:11,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959112839] [2020-09-24 22:39:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:16,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:16,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:16,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:16,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:16,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:16,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:16,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:16,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:21,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:21,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:21,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-24 22:39:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:21,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:21,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:21,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:39:21,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:21,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:39:21,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959112839] [2020-09-24 22:39:21,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:21,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:39:21,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943867774] [2020-09-24 22:39:21,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:39:21,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:21,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:39:21,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:21,812 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 11 states. [2020-09-24 22:39:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:22,108 INFO L93 Difference]: Finished difference Result 160 states and 234 transitions. [2020-09-24 22:39:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:39:22,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-24 22:39:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:22,110 INFO L225 Difference]: With dead ends: 160 [2020-09-24 22:39:22,110 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 22:39:22,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:39:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 22:39:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2020-09-24 22:39:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 22:39:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-09-24 22:39:22,122 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 69 [2020-09-24 22:39:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:22,122 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-09-24 22:39:22,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:39:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-09-24 22:39:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 22:39:22,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:22,128 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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 22:39:22,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:22,128 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-24 22:39:22,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:22,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157348419] [2020-09-24 22:39:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:39:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 22:39:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 22:39:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:27,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 22:39:32,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:32,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 22:39:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:32,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:32,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:32,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:39:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 22:39:32,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:32,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:39:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-24 22:39:32,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157348419] [2020-09-24 22:39:32,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:32,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:32,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411697802] [2020-09-24 22:39:32,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:32,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:32,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:32,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:32,482 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 7 states. [2020-09-24 22:39:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:32,560 INFO L93 Difference]: Finished difference Result 134 states and 176 transitions. [2020-09-24 22:39:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:32,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-24 22:39:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:32,563 INFO L225 Difference]: With dead ends: 134 [2020-09-24 22:39:32,563 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 22:39:32,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 22:39:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-24 22:39:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 22:39:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-09-24 22:39:32,576 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 71 [2020-09-24 22:39:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:32,577 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-09-24 22:39:32,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-09-24 22:39:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 22:39:32,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:32,578 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 22:39:32,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:32,579 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-24 22:39:32,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:32,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011774415] [2020-09-24 22:39:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:39:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 22:39:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:39:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:43,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-09-24 22:39:43,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:43,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:43,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-09-24 22:39:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:39:46,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:46,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:47,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 54 proven. 25 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 22:39:47,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011774415] [2020-09-24 22:39:47,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:47,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:47,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115248272] [2020-09-24 22:39:47,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:47,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:47,040 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 9 states. [2020-09-24 22:39:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:47,283 INFO L93 Difference]: Finished difference Result 175 states and 244 transitions. [2020-09-24 22:39:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:39:47,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-09-24 22:39:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:47,287 INFO L225 Difference]: With dead ends: 175 [2020-09-24 22:39:47,287 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 22:39:47,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 22:39:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2020-09-24 22:39:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 22:39:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2020-09-24 22:39:47,298 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 105 [2020-09-24 22:39:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:47,299 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2020-09-24 22:39:47,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2020-09-24 22:39:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:47,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:47,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 22:39:47,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:39:47,301 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:47,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 1 times [2020-09-24 22:39:47,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:47,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427462409] [2020-09-24 22:39:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking...