/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=NARROWEST --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/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:03:31,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:03:31,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:03:32,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:03:32,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:03:32,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:03:32,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:03:32,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:03:32,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:03:32,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:03:32,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:03:32,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:03:32,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:03:32,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:03:32,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:03:32,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:03:32,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:03:32,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:03:32,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:03:32,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:03:32,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:03:32,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:03:32,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:03:32,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:03:32,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:03:32,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:03:32,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:03:32,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:03:32,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:03:32,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:03:32,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:03:32,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:03:32,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:03:32,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:03:32,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:03:32,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:03:32,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:03:32,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:03:32,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:03:32,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:03:32,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:03:32,072 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 02:03:32,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:03:32,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:03:32,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:03:32,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:03:32,124 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:03:32,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:03:32,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:03:32,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:03:32,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:03:32,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:03:32,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:03:32,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:03:32,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:03:32,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:03:32,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:03:32,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:03:32,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:03:32,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:03:32,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:03:32,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:03:32,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:03:32,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:03:32,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:03:32,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:03:32,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:03:32,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:03:32,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:03:32,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:03:32,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:03:32,131 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:03:32,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:03:32,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:03:32,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:03:32,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:03:32,610 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:03:32,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 02:03:32,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84319821/b10b5fb708894a929e47cc64e77ae16d/FLAGc62047634 [2020-09-25 02:03:33,199 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:03:33,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 02:03:33,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84319821/b10b5fb708894a929e47cc64e77ae16d/FLAGc62047634 [2020-09-25 02:03:33,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84319821/b10b5fb708894a929e47cc64e77ae16d [2020-09-25 02:03:33,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:03:33,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:03:33,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:33,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:03:33,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:03:33,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33, skipping insertion in model container [2020-09-25 02:03:33,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:03:33,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:03:33,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:33,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:03:33,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:33,847 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:03:33,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33 WrapperNode [2020-09-25 02:03:33,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:33,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:03:33,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:03:33,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:03:33,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (1/1) ... [2020-09-25 02:03:33,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:03:33,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:03:33,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:03:33,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:03:33,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (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 02:03:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:03:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:03:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 02:03:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:03:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:03:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:03:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 02:03:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:03:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:03:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:03:34,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:03:34,215 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:03:34,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:34 BoogieIcfgContainer [2020-09-25 02:03:34,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:03:34,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:03:34,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:03:34,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:03:34,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:03:33" (1/3) ... [2020-09-25 02:03:34,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c8e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:34, skipping insertion in model container [2020-09-25 02:03:34,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:33" (2/3) ... [2020-09-25 02:03:34,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c8e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:34, skipping insertion in model container [2020-09-25 02:03:34,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:34" (3/3) ... [2020-09-25 02:03:34,230 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2020-09-25 02:03:34,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:03:34,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:03:34,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:03:34,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:03:34,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:03:34,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:03:34,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:03:34,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:03:34,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:03:34,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:03:34,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:03:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 02:03:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:03:34,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:34,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:34,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:34,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 02:03:34,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:34,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296193446] [2020-09-25 02:03:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:03:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 02:03:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 02:03:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:34,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:34,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:34,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:34,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:34,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:34,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:34,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:34,830 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 02:03:34,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296193446] [2020-09-25 02:03:34,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:03:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:03:34,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507293763] [2020-09-25 02:03:34,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:03:34,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:34,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:03:34,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:03:34,863 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 02:03:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:34,947 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 02:03:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:03:34,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:03:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:34,963 INFO L225 Difference]: With dead ends: 37 [2020-09-25 02:03:34,964 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 02:03:34,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 02:03:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 02:03:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 02:03:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 02:03:35,027 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 02:03:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:35,028 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 02:03:35,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:03:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 02:03:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 02:03:35,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:35,031 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] [2020-09-25 02:03:35,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:03:35,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 02:03:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331442901] [2020-09-25 02:03:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:03:35,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 02:03:35,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:03:35,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:35,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:35,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 02:03:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:03:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:03:35,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331442901] [2020-09-25 02:03:35,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:35,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:03:35,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162174092] [2020-09-25 02:03:35,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:03:35,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:03:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:03:35,617 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 02:03:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:35,678 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 02:03:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:35,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 02:03:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:35,681 INFO L225 Difference]: With dead ends: 34 [2020-09-25 02:03:35,681 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:03:35,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:03:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:03:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:03:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 02:03:35,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 02:03:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:35,691 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 02:03:35,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:03:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 02:03:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:03:35,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:35,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:35,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:03:35,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 02:03:35,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:35,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283389321] [2020-09-25 02:03:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:36,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:03:36,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 02:03:36,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:03:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:36,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:36,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 02:03:36,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 02:03:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:36,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 02:03:36,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:36,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:03:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:36,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:03:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:03:36,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283389321] [2020-09-25 02:03:36,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:36,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:03:36,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289174923] [2020-09-25 02:03:36,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:03:36,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:03:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:03:36,492 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-09-25 02:03:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:36,575 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 02:03:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:03:36,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-25 02:03:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:36,579 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:03:36,579 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 02:03:36,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 02:03:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 02:03:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 02:03:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 02:03:36,588 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 02:03:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:36,588 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 02:03:36,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:03:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 02:03:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 02:03:36,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:36,590 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:36,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:03:36,591 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:36,591 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 02:03:36,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:36,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256674040] [2020-09-25 02:03:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-25 02:03:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:03:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:37,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:37,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:37,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:37,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:37,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:37,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 02:03:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:03:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 02:03:37,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 02:03:37,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:37,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:37,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:37,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:37,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 02:03:37,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256674040] [2020-09-25 02:03:37,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:37,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:03:37,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086065776] [2020-09-25 02:03:37,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:03:37,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:03:37,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:37,895 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 9 states. [2020-09-25 02:03:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:38,062 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 02:03:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:03:38,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 02:03:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:38,065 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:03:38,065 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 02:03:38,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:03:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 02:03:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 02:03:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 02:03:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 02:03:38,074 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 02:03:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:38,074 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 02:03:38,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:03:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 02:03:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:03:38,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:38,076 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:38,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:03:38,077 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 02:03:38,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:38,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775393192] [2020-09-25 02:03:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:03:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-09-25 02:03:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:03:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:39,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:39,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:39,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:39,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:03:39,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 02:03:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 02:03:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:39,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:39,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:39,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 02:03:39,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:03:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 02:03:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:40,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:40,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:03:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:40,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:40,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:40,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:40,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 02:03:40,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775393192] [2020-09-25 02:03:40,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:40,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:03:40,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423316960] [2020-09-25 02:03:40,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:03:40,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:40,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:03:40,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:03:40,164 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 10 states. [2020-09-25 02:03:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:40,289 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 02:03:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:03:40,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 02:03:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:40,293 INFO L225 Difference]: With dead ends: 49 [2020-09-25 02:03:40,293 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 02:03:40,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:03:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 02:03:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 02:03:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 02:03:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 02:03:40,310 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 02:03:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:40,310 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 02:03:40,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:03:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 02:03:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 02:03:40,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:40,317 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:40,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:03:40,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:40,319 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 02:03:40,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:40,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588614284] [2020-09-25 02:03:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:42,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:42,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:03:42,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-09-25 02:03:42,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:03:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:03:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:42,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:42,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:42,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:42,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:03:42,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 02:03:42,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:03:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 02:03:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:42,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:03:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 02:03:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:03:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:42,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 02:03:42,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:03:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 02:03:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:43,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 02:03:43,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:43,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:43,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 02:03:43,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588614284] [2020-09-25 02:03:43,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:43,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:03:43,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536446445] [2020-09-25 02:03:43,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:03:43,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:43,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:03:43,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:43,192 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 11 states. [2020-09-25 02:03:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:43,298 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 02:03:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:03:43,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-25 02:03:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:43,301 INFO L225 Difference]: With dead ends: 54 [2020-09-25 02:03:43,301 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 02:03:43,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:03:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 02:03:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 02:03:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 02:03:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 02:03:43,309 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 02:03:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:43,309 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 02:03:43,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:03:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 02:03:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 02:03:43,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:43,311 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:43,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:03:43,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 02:03:43,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:43,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020658986] [2020-09-25 02:03:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:45,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:03:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2577 [2020-09-25 02:03:45,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:03:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:03:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:45,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:45,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:03:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 02:03:46,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:03:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 02:03:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:46,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:46,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:03:46,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 02:03:46,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:03:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:46,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:03:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 02:03:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:03:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 02:03:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:03:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:46,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:46,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:46,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:46,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 02:03:46,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:46,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:46,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:46,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:46,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 02:03:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:47,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:47,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 02:03:47,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020658986] [2020-09-25 02:03:47,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:47,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:03:47,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962005678] [2020-09-25 02:03:47,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:03:47,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:03:47,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:03:47,110 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-25 02:03:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:47,250 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 02:03:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:03:47,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-25 02:03:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:47,253 INFO L225 Difference]: With dead ends: 59 [2020-09-25 02:03:47,253 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 02:03:47,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:03:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 02:03:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 02:03:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 02:03:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 02:03:47,266 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 02:03:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:47,267 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 02:03:47,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:03:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 02:03:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:03:47,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:47,271 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:47,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:03:47,272 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 02:03:47,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:47,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699909777] [2020-09-25 02:03:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 02:03:50,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3424 [2020-09-25 02:03:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:03:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 02:03:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:50,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:03:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 02:03:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:03:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:03:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:03:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:03:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:03:51,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 02:03:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:03:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:03:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 02:03:51,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:03:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 02:03:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:03:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:52,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 02:03:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 02:03:52,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699909777] [2020-09-25 02:03:52,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:52,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:03:52,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124289892] [2020-09-25 02:03:52,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:03:52,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:52,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:03:52,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:03:52,262 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-25 02:03:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:52,421 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 02:03:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:03:52,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-25 02:03:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:52,424 INFO L225 Difference]: With dead ends: 64 [2020-09-25 02:03:52,424 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:03:52,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:03:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:03:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 02:03:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:03:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 02:03:52,439 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 02:03:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:52,440 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 02:03:52,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:03:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 02:03:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 02:03:52,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:52,445 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:52,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:52,446 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:52,447 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 02:03:52,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:52,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162724158] [2020-09-25 02:03:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:03:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 02:03:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:56,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:03:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 02:03:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:03:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:03:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:57,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:57,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:03:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:03:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:03:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:03:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:03:58,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 02:03:58,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:03:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:03:58,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 02:03:58,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:03:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:58,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:58,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 14 proven. 184 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 02:03:58,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162724158] [2020-09-25 02:03:58,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:58,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:03:58,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329918908] [2020-09-25 02:03:58,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:03:58,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:58,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:03:58,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:03:58,510 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 15 states. [2020-09-25 02:03:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:58,667 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 02:03:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:03:58,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-09-25 02:03:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:58,669 INFO L225 Difference]: With dead ends: 69 [2020-09-25 02:03:58,670 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 02:03:58,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:03:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 02:03:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 02:03:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 02:03:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 02:03:58,677 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 02:03:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:58,678 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 02:03:58,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:03:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 02:03:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 02:03:58,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:58,679 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:58,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:03:58,679 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:58,680 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 02:03:58,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:58,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199098240] [2020-09-25 02:03:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:04:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:04:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:03,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:03,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:03,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:03,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:04:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:04:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:04,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:04,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:04:04,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 02:04:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 02:04:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:04,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:04:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 02:04:04,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:05,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 02:04:05,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:04:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:04:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:04:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:04:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 02:04:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:05,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:04:05,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 02:04:05,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:04:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:04:05,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:04:05,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:04:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:05,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:05,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:05,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 22 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 02:04:06,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199098240] [2020-09-25 02:04:06,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:06,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:04:06,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869635903] [2020-09-25 02:04:06,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:04:06,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:04:06,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:04:06,029 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-25 02:04:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:06,176 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 02:04:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:04:06,177 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-25 02:04:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:06,178 INFO L225 Difference]: With dead ends: 74 [2020-09-25 02:04:06,178 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 02:04:06,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:04:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 02:04:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 02:04:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 02:04:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 02:04:06,186 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 02:04:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:06,187 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 02:04:06,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:04:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 02:04:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 02:04:06,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:06,188 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:06,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:04:06,188 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 02:04:06,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:06,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572648613] [2020-09-25 02:04:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 02:04:11,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:04:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 02:04:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 02:04:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:12,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:04:12,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 02:04:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 02:04:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:13,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 02:04:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:04:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:04:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:04:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:04:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:13,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:04:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:04:13,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 02:04:13,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:04:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:13,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 13 proven. 275 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 02:04:13,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572648613] [2020-09-25 02:04:13,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:13,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:04:13,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611879815] [2020-09-25 02:04:13,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:04:13,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:13,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:04:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:04:13,991 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 17 states. [2020-09-25 02:04:14,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:14,210 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 02:04:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:04:14,211 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-09-25 02:04:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:14,212 INFO L225 Difference]: With dead ends: 79 [2020-09-25 02:04:14,212 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 02:04:14,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=489, Unknown=0, NotChecked=0, Total=756 [2020-09-25 02:04:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 02:04:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 02:04:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 02:04:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 02:04:14,219 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 02:04:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:14,220 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 02:04:14,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:04:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 02:04:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 02:04:14,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:14,221 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:14,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:04:14,221 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 02:04:14,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:14,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704277527] [2020-09-25 02:04:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 02:04:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:04:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 02:04:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 02:04:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:04:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 02:04:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 02:04:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:21,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:04:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:04:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 02:04:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:04:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:04:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 02:04:22,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 02:04:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:04:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 02:04:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:04:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 02:04:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:04:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:04:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 02:04:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:04:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:04:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 17 proven. 341 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 02:04:23,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704277527] [2020-09-25 02:04:23,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:23,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 02:04:23,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197115250] [2020-09-25 02:04:23,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 02:04:23,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 02:04:23,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:04:23,006 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 18 states. [2020-09-25 02:04:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:23,296 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 02:04:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:04:23,297 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-09-25 02:04:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:23,298 INFO L225 Difference]: With dead ends: 84 [2020-09-25 02:04:23,299 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 02:04:23,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=308, Invalid=562, Unknown=0, NotChecked=0, Total=870 [2020-09-25 02:04:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 02:04:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 02:04:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 02:04:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 02:04:23,319 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 02:04:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:23,320 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 02:04:23,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 02:04:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 02:04:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 02:04:23,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:23,323 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:23,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:04:23,323 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 02:04:23,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:23,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293228404] [2020-09-25 02:04:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 02:04:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:28,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:28,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:04:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 02:04:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-09-25 02:04:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 02:04:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 02:04:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:29,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 02:04:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-25 02:04:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:04:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 02:04:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:04:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:30,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 02:04:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 02:04:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat