/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_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:45,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:45,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:45,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:45,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:45,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:45,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:45,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:45,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:45,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:45,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:45,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:45,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:45,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:45,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:45,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:45,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:45,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:45,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:45,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:45,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:45,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:45,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:45,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:45,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:45,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:45,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:45,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:45,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:45,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:45,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:45,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:45,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:45,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:45,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:45,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:45,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:45,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:45,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:45,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:45,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:45,981 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 22:38:46,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:46,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:46,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:46,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:46,010 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:46,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:46,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:46,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:46,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:46,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:46,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:46,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:46,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:46,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:46,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:46,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:46,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:46,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:46,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:46,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:46,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:46,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:46,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:46,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:46,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:46,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:46,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:46,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:46,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:46,015 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 22:38:46,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:46,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:46,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:46,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:46,541 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:46,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-24 22:38:46,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ef6c4cae/19be5d5f0bea48f994606c1349d859ff/FLAG7798f6966 [2020-09-24 22:38:47,163 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:47,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-24 22:38:47,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ef6c4cae/19be5d5f0bea48f994606c1349d859ff/FLAG7798f6966 [2020-09-24 22:38:47,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ef6c4cae/19be5d5f0bea48f994606c1349d859ff [2020-09-24 22:38:47,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:47,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:47,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:47,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:47,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:47,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47, skipping insertion in model container [2020-09-24 22:38:47,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:47,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:47,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:47,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:47,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:47,823 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:47,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47 WrapperNode [2020-09-24 22:38:47,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:47,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:47,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:47,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:47,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (1/1) ... [2020-09-24 22:38:47,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:47,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:47,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:47,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:47,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (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 22:38:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:38:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:38:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:48,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:48,241 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:48 BoogieIcfgContainer [2020-09-24 22:38:48,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:48,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:48,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:48,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:48,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:47" (1/3) ... [2020-09-24 22:38:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:48, skipping insertion in model container [2020-09-24 22:38:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:47" (2/3) ... [2020-09-24 22:38:48,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:48, skipping insertion in model container [2020-09-24 22:38:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:48" (3/3) ... [2020-09-24 22:38:48,256 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-24 22:38:48,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:48,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:48,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:48,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:48,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:48,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:48,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:48,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:48,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:48,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:48,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:38:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:48,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:48,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:48,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:38:48,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:48,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-24 22:38:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 22:38:48,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:38:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:38:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:48,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:48,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:38:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,865 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 22:38:48,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-24 22:38:48,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:48,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:48,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843652712] [2020-09-24 22:38:48,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:48,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:48,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:48,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:48,912 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:38:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:49,005 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:38:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:49,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:49,023 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:38:49,024 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:38:49,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 22:38:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:38:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:38:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:49,098 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:38:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:49,100 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:49,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:49,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:49,105 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 22:38:49,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:49,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:38:49,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:49,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814111112] [2020-09-24 22:38:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:49,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 22:38:49,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:38:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 22:38:49,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:49,480 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 22:38:49,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814111112] [2020-09-24 22:38:49,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:49,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:49,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151286706] [2020-09-24 22:38:49,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:49,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:49,485 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:38:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:49,522 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:38:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:49,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:49,524 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:38:49,524 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:49,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 22:38:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:38:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:49,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:38:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:49,536 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:49,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:49,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:49,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:49,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:49,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:38:49,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:49,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639164382] [2020-09-24 22:38:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-09-24 22:38:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:38:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:51,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:51,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:51,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 22:38:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:52,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:38:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:38:52,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639164382] [2020-09-24 22:38:52,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:52,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:52,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181480856] [2020-09-24 22:38:52,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:52,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:52,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:52,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:52,355 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-24 22:38:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:52,518 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:38:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:52,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:38:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:52,521 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:52,521 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:52,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:38:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:38:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:38:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:38:52,531 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:38:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:52,532 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:38:52,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:38:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:52,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:52,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:52,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:52,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:38:52,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:52,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036170918] [2020-09-24 22:38:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-24 22:38:53,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:38:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:53,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 22:38:53,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:38:53,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:38:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:53,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:38:53,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:38:53,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:38:53,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036170918] [2020-09-24 22:38:53,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:53,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:53,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466000727] [2020-09-24 22:38:53,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:53,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:53,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:53,825 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-24 22:38:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:53,916 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-09-24 22:38:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:38:53,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 22:38:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:53,919 INFO L225 Difference]: With dead ends: 47 [2020-09-24 22:38:53,919 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 22:38:53,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:38:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 22:38:53,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 22:38:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 22:38:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-24 22:38:53,933 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-24 22:38:53,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:53,934 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-24 22:38:53,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-24 22:38:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:53,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 22:38:53,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:53,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:38:53,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:53,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410679123] [2020-09-24 22:38:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:55,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:38:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-09-24 22:38:55,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:38:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:38:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:38:56,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-24 22:38:56,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 22:38:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:38:56,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:38:56,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410679123] [2020-09-24 22:38:56,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:56,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:38:56,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684539910] [2020-09-24 22:38:56,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:38:56,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:38:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:56,503 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-24 22:38:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:56,768 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-24 22:38:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:38:56,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:38:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:56,772 INFO L225 Difference]: With dead ends: 79 [2020-09-24 22:38:56,772 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 22:38:56,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:38:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 22:38:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-24 22:38:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:38:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-09-24 22:38:56,795 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 35 [2020-09-24 22:38:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:56,796 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-09-24 22:38:56,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:38:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-09-24 22:38:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:56,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:56,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 22:38:56,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:56,803 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 22:38:56,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:56,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024790259] [2020-09-24 22:38:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:39:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:02,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 22:39:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:39:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:39:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:39:02,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:02,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 22:39:02,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 22:39:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024790259] [2020-09-24 22:39:02,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:02,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:39:02,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560758899] [2020-09-24 22:39:02,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:39:02,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:39:02,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:02,255 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 12 states. [2020-09-24 22:39:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:02,380 INFO L93 Difference]: Finished difference Result 71 states and 94 transitions. [2020-09-24 22:39:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:39:02,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 22:39:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:02,382 INFO L225 Difference]: With dead ends: 71 [2020-09-24 22:39:02,383 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 22:39:02,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 22:39:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-09-24 22:39:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 22:39:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2020-09-24 22:39:02,396 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 52 [2020-09-24 22:39:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:02,397 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2020-09-24 22:39:02,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:39:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2020-09-24 22:39:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:02,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:02,401 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:02,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:02,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-24 22:39:02,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:02,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143376287] [2020-09-24 22:39:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 22:39:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:07,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:12,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:12,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:12,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 22:39:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:12,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:12,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:39:12,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:15,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:15,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:15,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 65 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 22:39:15,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143376287] [2020-09-24 22:39:15,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:15,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:15,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568769554] [2020-09-24 22:39:15,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:15,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:15,870 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 10 states. [2020-09-24 22:39:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:16,140 INFO L93 Difference]: Finished difference Result 128 states and 194 transitions. [2020-09-24 22:39:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:39:16,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-24 22:39:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:16,145 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:39:16,145 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:39:16,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:39:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:39:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-09-24 22:39:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 22:39:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-24 22:39:16,159 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 87 [2020-09-24 22:39:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:16,159 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-24 22:39:16,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-24 22:39:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:16,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:16,162 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:16,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:16,162 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1742794134, now seen corresponding path program 4 times [2020-09-24 22:39:16,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:16,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386524091] [2020-09-24 22:39:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:39:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:21,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:21,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:39:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 22:39:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:27,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:27,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 22:39:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:39:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 22:39:27,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386524091] [2020-09-24 22:39:27,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:27,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:27,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037489034] [2020-09-24 22:39:27,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:27,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:27,489 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 9 states. [2020-09-24 22:39:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:27,654 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2020-09-24 22:39:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:27,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 22:39:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:27,658 INFO L225 Difference]: With dead ends: 114 [2020-09-24 22:39:27,658 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:27,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-09-24 22:39:27,681 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 69 [2020-09-24 22:39:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:27,681 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-09-24 22:39:27,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-09-24 22:39:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:39:27,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:27,684 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:27,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:27,685 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:27,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:27,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 5 times [2020-09-24 22:39:27,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:27,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130303119] [2020-09-24 22:39:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:39:32,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:39:32,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:32,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:32,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:32,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:32,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:34,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:39:34,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1818 [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:35,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-09-24 22:39:35,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:35,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 22:39:36,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130303119] [2020-09-24 22:39:36,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:36,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:36,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212690390] [2020-09-24 22:39:36,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:36,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:36,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:36,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:36,056 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 7 states. [2020-09-24 22:39:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:36,203 INFO L93 Difference]: Finished difference Result 122 states and 159 transitions. [2020-09-24 22:39:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:36,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-24 22:39:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:36,206 INFO L225 Difference]: With dead ends: 122 [2020-09-24 22:39:36,206 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 22:39:36,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 22:39:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-24 22:39:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2020-09-24 22:39:36,218 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 70 [2020-09-24 22:39:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:36,219 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2020-09-24 22:39:36,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2020-09-24 22:39:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:36,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:36,220 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:36,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 6 times [2020-09-24 22:39:36,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:36,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588749758] [2020-09-24 22:39:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking...