/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:52:48,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:52:48,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:52:48,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:52:48,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:52:48,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:52:48,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:52:48,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:52:48,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:52:48,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:52:48,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:52:48,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:52:48,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:52:48,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:52:48,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:52:48,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:52:48,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:52:48,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:52:48,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:52:48,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:52:48,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:52:48,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:52:48,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:52:48,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:52:48,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:52:48,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:52:48,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:52:48,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:52:48,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:52:48,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:52:48,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:52:48,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:52:48,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:52:48,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:52:48,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:52:48,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:52:48,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:52:48,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:52:48,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:52:48,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:52:48,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:52:48,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:52:48,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:52:48,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:52:48,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:52:48,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:52:48,209 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:52:48,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:52:48,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:52:48,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:52:48,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:52:48,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:52:48,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:52:48,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:52:48,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:52:48,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:52:48,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:52:48,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:52:48,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:52:48,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:52:48,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:52:48,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:52:48,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:52:48,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:52:48,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:52:48,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:52:48,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:52:48,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:52:48,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:52:48,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:52:48,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:52:48,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:52:48,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:52:48,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:52:48,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:52:48,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:52:48,739 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:52:48,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 00:52:48,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07f55c378/73ecf847d84046769658edc5cc32f218/FLAG1004408cb [2020-09-25 00:52:49,402 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:52:49,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 00:52:49,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07f55c378/73ecf847d84046769658edc5cc32f218/FLAG1004408cb [2020-09-25 00:52:49,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07f55c378/73ecf847d84046769658edc5cc32f218 [2020-09-25 00:52:49,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:52:49,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:52:49,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:49,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:52:49,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:52:49,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:49" (1/1) ... [2020-09-25 00:52:49,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1d1049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:49, skipping insertion in model container [2020-09-25 00:52:49,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:49" (1/1) ... [2020-09-25 00:52:49,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:52:49,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:52:50,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:50,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:52:50,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:50,057 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:52:50,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50 WrapperNode [2020-09-25 00:52:50,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:50,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:52:50,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:52:50,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:52:50,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... [2020-09-25 00:52:50,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:52:50,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:52:50,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:52:50,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:52:50,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:52:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:52:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:52:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:52:50,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:52:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:52:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:52:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:52:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:52:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:52:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:52:50,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:52:50,478 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:52:50,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:50 BoogieIcfgContainer [2020-09-25 00:52:50,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:52:50,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:52:50,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:52:50,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:52:50,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:52:49" (1/3) ... [2020-09-25 00:52:50,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319f670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:50, skipping insertion in model container [2020-09-25 00:52:50,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:50" (2/3) ... [2020-09-25 00:52:50,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319f670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:50, skipping insertion in model container [2020-09-25 00:52:50,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:50" (3/3) ... [2020-09-25 00:52:50,494 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 00:52:50,508 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:52:50,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:52:50,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:52:50,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:52:50,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:52:50,589 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:52:50,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:52:50,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:52:50,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:52:50,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:52:50,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:52:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:52:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:52:50,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:50,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:50,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:50,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:52:50,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:50,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973593553] [2020-09-25 00:52:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:52:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 00:52:50,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:52:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:52:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:52:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:52:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:52:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:52:50,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973593553] [2020-09-25 00:52:50,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:50,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:50,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381216116] [2020-09-25 00:52:50,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:50,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:51,008 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:52:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:51,170 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:52:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:52:51,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:52:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:51,187 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:52:51,187 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:52:51,192 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 00:52:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:52:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:52:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:51,247 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:52:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:51,248 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:51,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:52:51,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:51,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:51,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:52:51,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:52:51,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:51,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060568105] [2020-09-25 00:52:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:52:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 00:52:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:52:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:51,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:52:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:51,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:51,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 00:52:51,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:52:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:52:51,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060568105] [2020-09-25 00:52:51,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:51,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:51,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106530339] [2020-09-25 00:52:51,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:51,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:51,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:51,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:51,535 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:52:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:51,612 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:52:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:52:51,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:52:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:51,614 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:52:51,615 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:51,616 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 00:52:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:52:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:51,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:52:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:51,626 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:51,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:52:51,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:51,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:51,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:52:51,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:52:51,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:51,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093844739] [2020-09-25 00:52:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:52:52,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-09-25 00:52:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:52:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:52:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:52:52,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:52:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 00:52:52,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:52:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:52:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:52,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:52,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:52:52,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:52:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:52:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:52:52,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093844739] [2020-09-25 00:52:52,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:52,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:52:52,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105954311] [2020-09-25 00:52:52,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:52:52,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:52,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:52:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:52:52,546 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 00:52:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:52,701 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:52:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:52,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 00:52:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:52,704 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:52:52,706 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:52,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:52:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:52:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:52:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:52:52,730 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:52:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:52,733 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:52:52,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:52:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:52:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:52:52,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:52,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:52,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:52:52,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:52:52,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:52,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320019973] [2020-09-25 00:52:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:53,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-25 00:52:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:52:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:52:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:53,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:52:53,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 00:52:53,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:52:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:53,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:52:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:53,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:53,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:52:53,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:52:53,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320019973] [2020-09-25 00:52:53,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:53,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:52:53,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551076205] [2020-09-25 00:52:53,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:52:53,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:52:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:52:53,694 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 00:52:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:53,781 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 00:52:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:53,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 00:52:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:53,784 INFO L225 Difference]: With dead ends: 42 [2020-09-25 00:52:53,784 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 00:52:53,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:52:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 00:52:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 00:52:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:52:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 00:52:53,794 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 00:52:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:53,794 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 00:52:53,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:52:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 00:52:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:52:53,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:53,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:53,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:52:53,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:52:53,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:53,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929645131] [2020-09-25 00:52:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:53,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:52:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:52:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-25 00:52:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:52:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:52:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:52:54,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 00:52:54,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:52:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:52:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:54,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:52:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:54,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:54,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 00:52:54,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:52:54,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929645131] [2020-09-25 00:52:54,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:54,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:52:54,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530058990] [2020-09-25 00:52:54,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:52:54,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:54,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:52:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:52:54,597 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-09-25 00:52:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:54,711 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-09-25 00:52:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:52:54,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 00:52:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:54,713 INFO L225 Difference]: With dead ends: 72 [2020-09-25 00:52:54,713 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:52:54,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:52:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:52:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 00:52:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:52:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 00:52:54,723 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 35 [2020-09-25 00:52:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:54,724 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 00:52:54,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:52:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 00:52:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:52:54,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:54,726 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:54,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:52:54,727 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:52:54,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:54,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875375222] [2020-09-25 00:52:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:52:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-09-25 00:52:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:52:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:52:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:52:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-09-25 00:52:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:52:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:52:59,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 00:52:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:52:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:59,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:52:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:52:59,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:52:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 00:52:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 00:52:59,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875375222] [2020-09-25 00:52:59,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:59,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:52:59,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649797582] [2020-09-25 00:52:59,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:52:59,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:59,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:52:59,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:52:59,178 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 00:52:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:59,322 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 00:52:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:59,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 00:52:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:59,324 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:52:59,324 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:52:59,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:52:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:52:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 00:52:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:52:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 00:52:59,342 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 52 [2020-09-25 00:52:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:59,343 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 00:52:59,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:52:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 00:52:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:52:59,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:59,348 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:59,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:52:59,350 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:52:59,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:59,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759611136] [2020-09-25 00:52:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:53:04,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:53:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 00:53:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:53:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:04,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:04,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:04,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:53:09,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 00:53:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:53:09,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:53:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 00:53:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 00:53:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:09,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:53:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:09,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:09,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3319 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:53:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:13,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 00:53:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:13,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:53:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:53:13,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 00:53:13,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759611136] [2020-09-25 00:53:13,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:13,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:53:13,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663361245] [2020-09-25 00:53:13,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:53:13,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:53:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:53:13,368 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 10 states. [2020-09-25 00:53:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:13,581 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2020-09-25 00:53:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:53:13,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 00:53:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:13,584 INFO L225 Difference]: With dead ends: 83 [2020-09-25 00:53:13,584 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 00:53:13,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:53:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 00:53:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 00:53:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 00:53:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 00:53:13,594 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 87 [2020-09-25 00:53:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:13,594 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 00:53:13,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:53:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 00:53:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 00:53:13,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:13,596 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:13,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:53:13,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:13,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:13,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 4 times [2020-09-25 00:53:13,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:13,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130041577] [2020-09-25 00:53:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 00:53:18,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 00:53:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 00:53:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:53:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:53:18,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:23,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 00:53:23,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 00:53:23,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:53:23,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 00:53:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:25,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 00:53:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:25,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:53:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:25,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:25,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:25,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 00:53:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:53:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:53:31,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:53:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 00:53:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:53:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:31,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:31,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:31,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:53:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:32,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:53:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:32,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:32,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 00:53:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 00:53:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 190 proven. 109 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-09-25 00:53:32,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130041577] [2020-09-25 00:53:32,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:32,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:53:32,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658441332] [2020-09-25 00:53:32,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:53:32,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:53:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:53:32,095 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 13 states. [2020-09-25 00:53:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:32,411 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-25 00:53:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:53:32,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-09-25 00:53:32,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:32,413 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:53:32,413 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:53:32,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:53:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:53:32,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-25 00:53:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:53:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-09-25 00:53:32,422 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 121 [2020-09-25 00:53:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:32,422 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-09-25 00:53:32,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:53:32,423 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-09-25 00:53:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 00:53:32,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:32,424 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:32,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:53:32,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 00:53:32,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:32,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856980210] [2020-09-25 00:53:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:53:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:41,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 00:53:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 00:53:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:53:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:53:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:53:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:43,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-09-25 00:53:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:53:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 00:53:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:53:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:44,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:44,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:53:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:53:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking...