/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=DEEPEST --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 [2020-09-25 00:52:48,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:52:48,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:52:48,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:52:48,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:52:48,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:52:48,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:52:48,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:52:48,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:52:48,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:52:48,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:52:48,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:52:48,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:52:48,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:52:48,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:52:48,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:52:48,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:52:48,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:52:48,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:52:48,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:52:48,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:52:48,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:52:48,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:52:48,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:52:48,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:52:48,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:52:48,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:52:48,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:52:48,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:52:48,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:52:48,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:52:48,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:52:48,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:52:48,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:52:48,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:52:48,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:52:48,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:52:48,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:52:48,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:52:48,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:52:48,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:52:48,782 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 [2020-09-25 00:52:48,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:52:48,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:52:48,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:52:48,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:52:48,850 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:52:48,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:52:48,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:52:48,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:52:48,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:52:48,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:52:48,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:52:48,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:52:48,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:52:48,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:52:48,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:52:48,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:52:48,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:52:48,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:52:48,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:52:48,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:52:48,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:52:48,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:52:48,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:52:48,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:52:48,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:52:48,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:52:48,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:52:48,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:52:48,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:52:48,859 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:52:49,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:52:49,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:52:49,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:52:49,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:52:49,319 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:52:49,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 00:52:49,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78bb185c/ee6c00c0775b4a1f9395b68ac3ec69ad/FLAG7a6aaf8c9 [2020-09-25 00:52:49,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:52:49,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 00:52:49,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78bb185c/ee6c00c0775b4a1f9395b68ac3ec69ad/FLAG7a6aaf8c9 [2020-09-25 00:52:50,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a78bb185c/ee6c00c0775b4a1f9395b68ac3ec69ad [2020-09-25 00:52:50,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:52:50,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:52:50,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:50,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:52:50,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:52:50,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a32a894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50, skipping insertion in model container [2020-09-25 00:52:50,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:52:50,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:52:50,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:50,596 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:52:50,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:50,628 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:52:50,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50 WrapperNode [2020-09-25 00:52:50,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:50,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:52:50,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:52:50,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:52:50,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:52:50,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:52:50,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:52:50,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:52:50,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (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 [2020-09-25 00:52:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:52:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:52:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:52:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:52:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:52:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:52:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:52:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:52:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:52:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:52:51,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:52:51,045 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:52:51,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:51 BoogieIcfgContainer [2020-09-25 00:52:51,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:52:51,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:52:51,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:52:51,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:52:51,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:52:50" (1/3) ... [2020-09-25 00:52:51,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d00bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:51, skipping insertion in model container [2020-09-25 00:52:51,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (2/3) ... [2020-09-25 00:52:51,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d00bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:51, skipping insertion in model container [2020-09-25 00:52:51,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:51" (3/3) ... [2020-09-25 00:52:51,084 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-25 00:52:51,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:52:51,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:52:51,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:52:51,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:52:51,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:52:51,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:52:51,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:52:51,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:52:51,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:52:51,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:52:51,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:52:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:52:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:52:51,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:51,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:51,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:52:51,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:51,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094335841] [2020-09-25 00:52:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:52:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 00:52:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:52:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:52:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:51,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:52:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:52:51,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:52:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:52:51,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094335841] [2020-09-25 00:52:51,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:51,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:51,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535822636] [2020-09-25 00:52:51,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:51,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:51,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:51,797 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:52:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:51,898 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:52:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:51,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:52:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:51,912 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:52:51,912 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:52:51,917 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 [2020-09-25 00:52:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:52:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:52:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:51,970 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:52:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:51,971 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:51,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:52:51,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:51,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:51,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:52:51,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:51,976 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:52:51,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:51,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382636265] [2020-09-25 00:52:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:52:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 00:52:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:52:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:52,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:52:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:52:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:52:52,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382636265] [2020-09-25 00:52:52,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:52,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:52,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636922814] [2020-09-25 00:52:52,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:52,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:52,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:52,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:52,254 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:52:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:52,301 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:52:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:52,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:52:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:52,305 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:52:52,305 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:52,309 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 [2020-09-25 00:52:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:52:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:52,322 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:52:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:52,323 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:52,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:52:52,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:52,325 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] [2020-09-25 00:52:52,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:52:52,326 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:52:52,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:52,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917916467] [2020-09-25 00:52:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:52:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:52:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-09-25 00:52:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:52:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:52:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:54,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:54,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:52:54,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:54,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 00:52:54,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:54,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:52:54,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:52:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:52:54,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:52:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:52:54,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917916467] [2020-09-25 00:52:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:54,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:52:54,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131715775] [2020-09-25 00:52:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:52:54,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:52:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:52:54,762 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 00:52:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:54,893 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:52:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:54,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 00:52:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:54,896 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:52:54,896 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:54,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:52:54,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:52:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:52:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:52:54,906 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:52:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:54,907 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:52:54,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:52:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:52:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:52:54,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:54,909 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] [2020-09-25 00:52:54,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:52:54,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:54,910 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:52:54,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:54,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557655918] [2020-09-25 00:52:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 00:52:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:52:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:52:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:56,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:52:56,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:52:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 00:52:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:52:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:56,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:52:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:52:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 00:52:56,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557655918] [2020-09-25 00:52:56,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:56,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:52:56,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784775969] [2020-09-25 00:52:56,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:52:56,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:56,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:52:56,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:52:56,319 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-25 00:52:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:56,432 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-09-25 00:52:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:52:56,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 00:52:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:56,436 INFO L225 Difference]: With dead ends: 47 [2020-09-25 00:52:56,436 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 00:52:56,439 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 [2020-09-25 00:52:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 00:52:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 00:52:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 00:52:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-25 00:52:56,456 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-25 00:52:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:56,457 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-25 00:52:56,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:52:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-25 00:52:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:52:56,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:56,461 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] [2020-09-25 00:52:56,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:52:56,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:56,465 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:52:56,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:56,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184296665] [2020-09-25 00:52:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:52:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:52:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-09-25 00:52:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:52:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:52:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:52:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:52:58,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 00:52:58,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:52:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:52:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:52:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:58,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:52:58,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:52:58,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184296665] [2020-09-25 00:52:58,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:58,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:52:58,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262818995] [2020-09-25 00:52:58,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:52:58,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:58,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:52:58,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:52:58,968 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-25 00:52:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:59,189 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-25 00:52:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:52:59,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 00:52:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:59,193 INFO L225 Difference]: With dead ends: 79 [2020-09-25 00:52:59,194 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:52:59,198 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 [2020-09-25 00:52:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:52:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 00:52:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:52:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-09-25 00:52:59,217 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 35 [2020-09-25 00:52:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:59,218 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-09-25 00:52:59,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:52:59,218 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-09-25 00:52:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:52:59,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:59,221 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] [2020-09-25 00:52:59,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:52:59,221 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:59,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:59,224 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:52:59,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:59,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161580258] [2020-09-25 00:52:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:53:04,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:04,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:53:04,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:53:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:53:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:04,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:04,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:53:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 00:53:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:53:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:53:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:53:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 00:53:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:53:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:04,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:04,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:53:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:04,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:53:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:53:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 00:53:04,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161580258] [2020-09-25 00:53:04,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:04,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:53:04,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656561900] [2020-09-25 00:53:04,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:53:04,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:53:04,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:53:04,724 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 12 states. [2020-09-25 00:53:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:04,903 INFO L93 Difference]: Finished difference Result 71 states and 94 transitions. [2020-09-25 00:53:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:53:04,904 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 00:53:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:04,906 INFO L225 Difference]: With dead ends: 71 [2020-09-25 00:53:04,906 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 00:53:04,909 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 [2020-09-25 00:53:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 00:53:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-09-25 00:53:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 00:53:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2020-09-25 00:53:04,932 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 52 [2020-09-25 00:53:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:04,935 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2020-09-25 00:53:04,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:53:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2020-09-25 00:53:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:53:04,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:04,943 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] [2020-09-25 00:53:04,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:53:04,944 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:53:04,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:04,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33164150] [2020-09-25 00:53:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:53:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:53:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 00:53:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:53:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:53:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:53:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:53:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:53:15,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 00:53:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:15,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:15,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 00:53:15,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:15,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:15,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:53:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:15,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:15,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:53:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-09-25 00:53:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:18,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:53:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 66 proven. 82 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 00:53:18,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33164150] [2020-09-25 00:53:18,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:18,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:53:18,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429231706] [2020-09-25 00:53:18,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:53:18,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:53:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:53:18,422 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 10 states. [2020-09-25 00:53:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:18,664 INFO L93 Difference]: Finished difference Result 117 states and 169 transitions. [2020-09-25 00:53:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:53:18,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 00:53:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:18,666 INFO L225 Difference]: With dead ends: 117 [2020-09-25 00:53:18,667 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 00:53:18,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:53:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 00:53:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 00:53:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 00:53:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-09-25 00:53:18,679 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 87 [2020-09-25 00:53:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:18,679 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-09-25 00:53:18,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:53:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-09-25 00:53:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 00:53:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:18,681 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] [2020-09-25 00:53:18,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:53:18,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:18,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1742794134, now seen corresponding path program 4 times [2020-09-25 00:53:18,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:18,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937477233] [2020-09-25 00:53:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:23,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:24,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:28,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:28,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:53:28,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:53:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:53:28,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:53:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:53:29,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 00:53:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:29,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:29,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:29,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 00:53:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 00:53:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-25 00:53:29,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937477233] [2020-09-25 00:53:29,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:29,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:53:29,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145889218] [2020-09-25 00:53:29,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:53:29,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:29,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:53:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:29,742 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 9 states. [2020-09-25 00:53:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:29,868 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2020-09-25 00:53:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:53:29,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 00:53:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:29,870 INFO L225 Difference]: With dead ends: 110 [2020-09-25 00:53:29,870 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:53:29,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:53:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:53:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-25 00:53:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:53:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-09-25 00:53:29,878 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 69 [2020-09-25 00:53:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:29,878 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-09-25 00:53:29,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:53:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-09-25 00:53:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 00:53:29,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:29,880 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] [2020-09-25 00:53:29,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:53:29,880 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 5 times [2020-09-25 00:53:29,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:29,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929614326] [2020-09-25 00:53:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:34,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:53:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:53:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:53:34,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:53:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:34,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:53:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3479 [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:53:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:53:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:40,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:53:40,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:40,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:53:40,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:53:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:53:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 67 proven. 17 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-25 00:53:40,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929614326] [2020-09-25 00:53:40,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:40,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:53:40,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871095854] [2020-09-25 00:53:40,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:53:40,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:40,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:53:40,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:53:40,666 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 8 states. [2020-09-25 00:53:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:40,827 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-09-25 00:53:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:53:40,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 00:53:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:40,828 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:53:40,829 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:53:40,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:53:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:53:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-25 00:53:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:53:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-09-25 00:53:40,836 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 70 [2020-09-25 00:53:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:40,837 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-09-25 00:53:40,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:53:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-09-25 00:53:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:53:40,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:40,838 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] [2020-09-25 00:53:40,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:53:40,839 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 6 times [2020-09-25 00:53:40,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:40,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728696775] [2020-09-25 00:53:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking...