/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=SHALLOWEST --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_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:46:07,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:46:07,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:46:07,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:46:07,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:46:07,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:46:07,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:46:07,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:46:07,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:46:07,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:46:07,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:46:07,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:46:07,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:46:07,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:46:07,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:46:07,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:46:07,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:46:07,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:46:07,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:46:07,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:46:07,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:46:07,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:46:07,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:46:07,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:46:07,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:46:07,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:46:07,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:46:07,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:46:07,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:46:07,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:46:07,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:46:07,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:46:07,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:46:07,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:46:07,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:46:07,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:46:07,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:46:07,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:46:07,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:46:07,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:46:07,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:46:07,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:46:07,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:46:07,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:46:07,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:46:07,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:46:07,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:46:07,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:46:07,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:46:07,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:46:07,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:46:07,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:46:07,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:46:07,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:46:07,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:46:07,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:46:07,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:46:07,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:46:07,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:46:07,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:46:07,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:46:07,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:46:07,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:46:07,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:46:07,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:46:07,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:46:07,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:46:07,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:46:07,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:46:07,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:46:07,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:46:07,653 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:46:08,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:46:08,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:46:08,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:46:08,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:46:08,209 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:46:08,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-24 23:46:08,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30756e392/16cf5e0bcc924453917e1c4f369d34dc/FLAGb701c4fc7 [2020-09-24 23:46:08,799 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:46:08,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-24 23:46:08,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30756e392/16cf5e0bcc924453917e1c4f369d34dc/FLAGb701c4fc7 [2020-09-24 23:46:09,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30756e392/16cf5e0bcc924453917e1c4f369d34dc [2020-09-24 23:46:09,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:46:09,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:46:09,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:09,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:46:09,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:46:09,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09, skipping insertion in model container [2020-09-24 23:46:09,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:46:09,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:46:09,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:09,444 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:46:09,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:09,489 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:46:09,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09 WrapperNode [2020-09-24 23:46:09,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:09,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:46:09,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:46:09,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:46:09,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... [2020-09-24 23:46:09,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:46:09,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:46:09,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:46:09,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:46:09,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:46:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:46:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:46:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 23:46:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:46:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:46:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:46:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 23:46:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:46:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:46:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:46:09,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:46:09,977 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:46:09,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:09 BoogieIcfgContainer [2020-09-24 23:46:09,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:46:09,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:46:09,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:46:09,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:46:09,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:46:09" (1/3) ... [2020-09-24 23:46:09,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223e9186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:09, skipping insertion in model container [2020-09-24 23:46:09,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:09" (2/3) ... [2020-09-24 23:46:09,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223e9186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:09, skipping insertion in model container [2020-09-24 23:46:09,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:09" (3/3) ... [2020-09-24 23:46:09,995 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2020-09-24 23:46:10,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:46:10,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:46:10,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:46:10,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:46:10,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:46:10,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:46:10,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:46:10,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:46:10,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:46:10,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:46:10,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:46:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 23:46:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:46:10,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:10,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:10,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 23:46:10,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:10,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760583811] [2020-09-24 23:46:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:46:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:46:10,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:46:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:46:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:46:10,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:10,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760583811] [2020-09-24 23:46:10,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:10,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:10,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18212168] [2020-09-24 23:46:10,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:10,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:10,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:10,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:10,572 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 23:46:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:10,698 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 23:46:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:10,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:46:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:10,714 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:46:10,715 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:46:10,719 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 [2020-09-24 23:46:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:46:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:46:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:10,780 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 23:46:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:10,781 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:10,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:46:10,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:10,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:10,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:46:10,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 23:46:10,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:10,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133829134] [2020-09-24 23:46:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:10,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 23:46:10,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:10,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:11,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133829134] [2020-09-24 23:46:11,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:11,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:11,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292670526] [2020-09-24 23:46:11,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:11,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:11,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:11,062 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 23:46:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:11,147 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 23:46:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:11,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:46:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:11,150 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:46:11,150 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:46:11,151 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 [2020-09-24 23:46:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:46:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 23:46:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:11,160 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 23:46:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:11,161 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:11,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:46:11,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:11,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:11,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:46:11,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 23:46:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203373448] [2020-09-24 23:46:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:46:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-24 23:46:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:46:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:11,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:46:11,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 23:46:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:46:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:12,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:12,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:12,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:12,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:12,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:46:12,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:12,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203373448] [2020-09-24 23:46:12,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:12,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:12,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260686261] [2020-09-24 23:46:12,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:12,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:12,205 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 23:46:12,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:12,309 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-24 23:46:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:12,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:46:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:12,312 INFO L225 Difference]: With dead ends: 62 [2020-09-24 23:46:12,312 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:46:12,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:46:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 23:46:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 23:46:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 23:46:12,324 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-24 23:46:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:12,327 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 23:46:12,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 23:46:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:46:12,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:12,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:12,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:46:12,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:12,335 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 23:46:12,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:12,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682308848] [2020-09-24 23:46:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:46:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-24 23:46:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:46:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:12,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:12,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:46:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-24 23:46:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:46:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:13,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:13,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:46:13,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:13,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:13,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:46:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:13,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682308848] [2020-09-24 23:46:13,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:13,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:13,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367045551] [2020-09-24 23:46:13,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:13,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:13,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:13,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:13,640 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-24 23:46:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:13,834 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-24 23:46:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:13,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:46:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:13,843 INFO L225 Difference]: With dead ends: 94 [2020-09-24 23:46:13,843 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:46:13,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:46:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-24 23:46:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 23:46:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-24 23:46:13,876 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-24 23:46:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:13,877 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-24 23:46:13,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-24 23:46:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:46:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:13,883 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:13,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:46:13,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:13,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:13,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 23:46:13,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:13,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599227158] [2020-09-24 23:46:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:18,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:18,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:46:18,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:46:18,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 23:46:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:18,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:22,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3628 [2020-09-24 23:46:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:46:22,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:22,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 23:46:22,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:46:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:22,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:22,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:46:22,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 23:46:22,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599227158] [2020-09-24 23:46:22,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:22,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:22,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820832284] [2020-09-24 23:46:22,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:22,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:22,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:22,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:22,752 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 7 states. [2020-09-24 23:46:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:22,924 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-09-24 23:46:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:22,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-24 23:46:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:22,928 INFO L225 Difference]: With dead ends: 74 [2020-09-24 23:46:22,929 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 23:46:22,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 23:46:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2020-09-24 23:46:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 23:46:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-09-24 23:46:22,963 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 51 [2020-09-24 23:46:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:22,963 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-09-24 23:46:22,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-09-24 23:46:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 23:46:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:22,977 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:22,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:46:22,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 2 times [2020-09-24 23:46:22,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:22,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497437203] [2020-09-24 23:46:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 23:46:28,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 23:46:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:46:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:28,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 23:46:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 23:46:33,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:33,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:46:33,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:33,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:33,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:35,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:46:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-24 23:46:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:46:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 23:46:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:46:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:35,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:35,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:35,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 23:46:35,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497437203] [2020-09-24 23:46:35,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:35,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:46:35,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444042366] [2020-09-24 23:46:35,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:46:35,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:35,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:46:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:46:35,381 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 14 states. [2020-09-24 23:46:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:35,664 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2020-09-24 23:46:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:46:35,665 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-09-24 23:46:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:35,667 INFO L225 Difference]: With dead ends: 128 [2020-09-24 23:46:35,667 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 23:46:35,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:46:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 23:46:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-09-24 23:46:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 23:46:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-09-24 23:46:35,679 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 85 [2020-09-24 23:46:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:35,680 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-09-24 23:46:35,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:46:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-09-24 23:46:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 23:46:35,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:35,683 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] [2020-09-24 23:46:35,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:46:35,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 23:46:35,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:35,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276696110] [2020-09-24 23:46:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 23:46:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:46:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 23:46:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 23:46:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:40,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 23:46:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 23:46:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 23:46:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:46:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:46:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 23:46:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4410 [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:46:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-24 23:46:50,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:46:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:46:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:46:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:50,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:50,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:50,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:46:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:50,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:50,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:50,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:46:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:55,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:46:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:46:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:46:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:55,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:47:00,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:47:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4195 [2020-09-24 23:47:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:47:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:00,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 23:47:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:47:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:00,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:00,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:47:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:00,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:47:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:00,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:00,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 142 proven. 197 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-24 23:47:00,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276696110] [2020-09-24 23:47:00,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:00,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 23:47:00,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650286508] [2020-09-24 23:47:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 23:47:00,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:00,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 23:47:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:47:00,606 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 18 states. [2020-09-24 23:47:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:01,107 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-09-24 23:47:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:47:01,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-09-24 23:47:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:01,111 INFO L225 Difference]: With dead ends: 132 [2020-09-24 23:47:01,111 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 23:47:01,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:47:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 23:47:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 23:47:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 23:47:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-09-24 23:47:01,122 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 123 [2020-09-24 23:47:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:01,122 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-09-24 23:47:01,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 23:47:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-09-24 23:47:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 23:47:01,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:01,125 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:01,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:47:01,125 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:01,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 4 times [2020-09-24 23:47:01,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:01,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514711130] [2020-09-24 23:47:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking...