/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_2calls_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:53:28,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:53:28,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:53:28,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:53:28,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:53:28,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:53:28,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:53:28,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:53:28,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:53:28,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:53:28,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:53:28,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:53:28,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:53:28,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:53:28,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:53:28,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:53:28,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:53:28,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:53:28,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:53:28,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:53:28,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:53:28,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:53:28,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:53:28,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:53:28,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:53:28,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:53:28,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:53:28,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:53:28,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:53:28,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:53:28,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:53:28,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:53:28,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:53:28,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:53:28,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:53:28,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:53:28,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:53:28,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:53:28,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:53:28,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:53:28,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:53:28,170 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 00:53:28,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:53:28,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:53:28,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:53:28,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:53:28,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:53:28,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:53:28,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:53:28,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:53:28,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:53:28,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:53:28,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:53:28,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:53:28,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:53:28,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:53:28,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:53:28,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:53:28,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:53:28,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:53:28,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:53:28,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:53:28,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:53:28,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:53:28,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:53:28,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:53:28,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:53:28,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:53:28,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:53:28,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:53:28,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:53:28,230 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 00:53:28,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:53:28,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:53:28,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:53:28,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:53:28,697 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:53:28,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 00:53:28,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cc70fa4/0c644782249b49de9e5c34eb55c9f0ce/FLAGdb0a90a7c [2020-09-25 00:53:29,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:53:29,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 00:53:29,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cc70fa4/0c644782249b49de9e5c34eb55c9f0ce/FLAGdb0a90a7c [2020-09-25 00:53:29,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cc70fa4/0c644782249b49de9e5c34eb55c9f0ce [2020-09-25 00:53:29,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:53:29,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:53:29,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:53:29,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:53:29,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:53:29,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:29,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29, skipping insertion in model container [2020-09-25 00:53:29,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:29,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:53:29,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:53:29,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:53:29,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:53:29,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:53:29,972 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:53:29,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29 WrapperNode [2020-09-25 00:53:29,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:53:29,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:53:29,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:53:29,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:53:29,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:29,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (1/1) ... [2020-09-25 00:53:30,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:53:30,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:53:30,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:53:30,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:53:30,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (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 00:53:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:53:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:53:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 00:53:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 00:53:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 00:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 00:53:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:53:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:53:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:53:30,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:53:30,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:53:30,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:53:30 BoogieIcfgContainer [2020-09-25 00:53:30,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:53:30,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:53:30,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:53:30,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:53:30,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:53:29" (1/3) ... [2020-09-25 00:53:30,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:53:30, skipping insertion in model container [2020-09-25 00:53:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:53:29" (2/3) ... [2020-09-25 00:53:30,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:53:30, skipping insertion in model container [2020-09-25 00:53:30,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:53:30" (3/3) ... [2020-09-25 00:53:30,424 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2020-09-25 00:53:30,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:53:30,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:53:30,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:53:30,512 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:53:30,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:53:30,513 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:53:30,513 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:53:30,513 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:53:30,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:53:30,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:53:30,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:53:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 00:53:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:53:30,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:30,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:30,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 00:53:30,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:30,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160288658] [2020-09-25 00:53:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:53:30,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 00:53:30,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:53:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:30,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:53:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:53:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:53:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:53:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:31,040 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 00:53:31,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160288658] [2020-09-25 00:53:31,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:53:31,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:53:31,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212451565] [2020-09-25 00:53:31,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:53:31,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:31,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:53:31,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:53:31,073 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 00:53:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:31,160 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 00:53:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:31,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:53:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:31,177 INFO L225 Difference]: With dead ends: 58 [2020-09-25 00:53:31,177 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:53:31,182 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 00:53:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:53:31,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 00:53:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:53:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 00:53:31,239 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 00:53:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:31,240 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 00:53:31,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:53:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 00:53:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:53:31,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:31,243 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 00:53:31,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:53:31,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 00:53:31,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:31,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220911941] [2020-09-25 00:53:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:53:31,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:31,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 00:53:31,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:53:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:53:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:53:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:31,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:53:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:31,503 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 00:53:31,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220911941] [2020-09-25 00:53:31,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:53:31,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:53:31,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622481049] [2020-09-25 00:53:31,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:53:31,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:53:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:53:31,508 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 00:53:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:31,543 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 00:53:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:31,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:53:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:31,546 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:53:31,546 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:53:31,547 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 00:53:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:53:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 00:53:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:53:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 00:53:31,557 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 00:53:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:31,558 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 00:53:31,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:53:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 00:53:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:53:31,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:31,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:31,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:53:31,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 00:53:31,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:31,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139734463] [2020-09-25 00:53:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:33,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:53:33,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-09-25 00:53:33,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:53:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:53:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:33,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:33,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:33,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:33,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:33,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:53:33,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 00:53:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:53:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:33,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:33,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:53:33,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:53:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:33,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:33,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:33,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:53:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:53:33,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139734463] [2020-09-25 00:53:33,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:33,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:53:33,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785918326] [2020-09-25 00:53:33,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:53:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:33,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:53:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:53:33,813 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 00:53:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:33,964 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-25 00:53:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:33,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 00:53:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:33,969 INFO L225 Difference]: With dead ends: 82 [2020-09-25 00:53:33,969 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 00:53:33,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 00:53:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-25 00:53:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 00:53:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 00:53:33,994 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-25 00:53:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:33,995 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 00:53:33,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:53:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 00:53:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:53:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:33,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:53:33,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 00:53:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:34,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567964426] [2020-09-25 00:53:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:53:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-25 00:53:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:53:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:53:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:35,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 00:53:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:53:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:35,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:35,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:53:35,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:35,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:53:35,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:53:35,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567964426] [2020-09-25 00:53:35,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:53:35,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:53:35,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550750987] [2020-09-25 00:53:35,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:53:35,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:53:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:35,231 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 9 states. [2020-09-25 00:53:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:35,327 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 00:53:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:53:35,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 00:53:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:35,330 INFO L225 Difference]: With dead ends: 63 [2020-09-25 00:53:35,330 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 00:53:35,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:53:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 00:53:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-25 00:53:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 00:53:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-25 00:53:35,341 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2020-09-25 00:53:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:35,342 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-25 00:53:35,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:53:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-25 00:53:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:53:35,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:35,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:35,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:53:35,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:35,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:35,345 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 00:53:35,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:35,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219854201] [2020-09-25 00:53:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:53:37,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-25 00:53:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:53:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:53:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:53:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-25 00:53:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:53:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:53:37,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:53:37,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:53:37,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219854201] [2020-09-25 00:53:37,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:37,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:53:37,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255552466] [2020-09-25 00:53:37,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:53:37,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:37,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:53:37,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:37,660 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 9 states. [2020-09-25 00:53:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:37,803 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-25 00:53:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:37,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 00:53:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:37,807 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:53:37,807 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 00:53:37,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:53:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 00:53:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 00:53:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 00:53:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-25 00:53:37,827 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-25 00:53:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:37,827 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-25 00:53:37,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:53:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-25 00:53:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 00:53:37,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:37,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:37,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:53:37,835 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-25 00:53:37,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:37,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553730414] [2020-09-25 00:53:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:53:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:53:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:53:42,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:53:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:53:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:45,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:53:45,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2619 [2020-09-25 00:53:45,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:53:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:53:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 00:53:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:53:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:45,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:53:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:45,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:45,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:45,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:53:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 00:53:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:53:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:53:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 00:53:45,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553730414] [2020-09-25 00:53:45,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:53:45,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868853710] [2020-09-25 00:53:45,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:53:45,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:53:45,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:53:45,732 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 8 states. [2020-09-25 00:53:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:45,887 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2020-09-25 00:53:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:45,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 00:53:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:45,893 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:53:45,894 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 00:53:45,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 00:53:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 00:53:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:53:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-25 00:53:45,917 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 50 [2020-09-25 00:53:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:45,917 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-25 00:53:45,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:53:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-25 00:53:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 00:53:45,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:45,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:45,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:53:45,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-25 00:53:45,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:45,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324058964] [2020-09-25 00:53:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:53:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:53:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:53:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:53:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:53:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:53:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-09-25 00:53:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:53:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:53,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:53:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 00:53:53,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324058964] [2020-09-25 00:53:53,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:53,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:53:53,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482460333] [2020-09-25 00:53:53,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:53:53,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:53:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:53:53,520 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 11 states. [2020-09-25 00:53:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:53,773 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2020-09-25 00:53:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:53:53,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 00:53:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:53,776 INFO L225 Difference]: With dead ends: 102 [2020-09-25 00:53:53,776 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 00:53:53,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:53:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 00:53:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 00:53:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:53:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-09-25 00:53:53,797 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2020-09-25 00:53:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:53,799 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-09-25 00:53:53,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:53:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-09-25 00:53:53,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:53:53,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:53,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:53,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:53:53,802 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-25 00:53:53,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:53,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072480199] [2020-09-25 00:53:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:58,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:53:58,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:58,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:53:58,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:53:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:53:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:58,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:58,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:58,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:53:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:53:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 00:53:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:53:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:53:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:59,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:59,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:59,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:59,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:53:59,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:59,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:59,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:53:59,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 00:53:59,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072480199] [2020-09-25 00:53:59,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:59,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:53:59,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954963943] [2020-09-25 00:53:59,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:53:59,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:59,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:53:59,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:53:59,232 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 12 states. [2020-09-25 00:53:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:59,397 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2020-09-25 00:53:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:53:59,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 00:53:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:59,400 INFO L225 Difference]: With dead ends: 85 [2020-09-25 00:53:59,400 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 00:53:59,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:53:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 00:53:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-09-25 00:53:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 00:53:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-09-25 00:53:59,411 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 52 [2020-09-25 00:53:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:59,411 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-09-25 00:53:59,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:53:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-09-25 00:53:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:53:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:59,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:59,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:53:59,413 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash -176890171, now seen corresponding path program 1 times [2020-09-25 00:53:59,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:59,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337053915] [2020-09-25 00:53:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:54:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 00:54:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:04,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:04,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:04,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:04,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:06,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:54:06,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-09-25 00:54:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:54:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:54:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:54:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:06,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:06,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:54:06,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:54:06,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 00:54:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:06,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 00:54:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:54:06,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337053915] [2020-09-25 00:54:06,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:06,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:06,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902093002] [2020-09-25 00:54:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:06,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:06,566 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 8 states. [2020-09-25 00:54:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:06,724 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2020-09-25 00:54:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:06,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 00:54:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:06,727 INFO L225 Difference]: With dead ends: 126 [2020-09-25 00:54:06,728 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 00:54:06,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:54:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 00:54:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 00:54:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 00:54:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-09-25 00:54:06,738 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 53 [2020-09-25 00:54:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:06,738 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-09-25 00:54:06,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-09-25 00:54:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 00:54:06,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:06,740 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:06,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:54:06,740 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:06,741 INFO L82 PathProgramCache]: Analyzing trace with hash 589230722, now seen corresponding path program 1 times [2020-09-25 00:54:06,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:06,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289246965] [2020-09-25 00:54:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:11,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 00:54:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 00:54:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 00:54:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:54:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:11,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:11,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 00:54:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:54:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:17,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:54:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:18,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:54:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:18,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:18,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:18,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:18,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:54:18,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 00:54:18,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289246965] [2020-09-25 00:54:18,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:18,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:54:18,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406135542] [2020-09-25 00:54:18,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:54:18,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:18,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:54:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:18,128 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 9 states. [2020-09-25 00:54:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:18,374 INFO L93 Difference]: Finished difference Result 140 states and 182 transitions. [2020-09-25 00:54:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:54:18,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 00:54:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:18,380 INFO L225 Difference]: With dead ends: 140 [2020-09-25 00:54:18,380 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 00:54:18,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:54:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 00:54:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-09-25 00:54:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 00:54:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-09-25 00:54:18,395 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 86 [2020-09-25 00:54:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:18,395 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-09-25 00:54:18,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:54:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-09-25 00:54:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:54:18,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:18,397 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:18,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:54:18,398 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1513763016, now seen corresponding path program 2 times [2020-09-25 00:54:18,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:18,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107455376] [2020-09-25 00:54:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking...