/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=WIDEST --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_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:20,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:20,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:20,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:20,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:20,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:20,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:20,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:20,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:20,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:20,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:20,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:20,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:20,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:20,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:20,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:20,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:20,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:20,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:20,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:20,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:20,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:20,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:20,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:20,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:20,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:20,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:20,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:20,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:20,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:20,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:20,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:20,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:20,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:20,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:20,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:20,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:20,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:20,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:20,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:20,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:20,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:09:20,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:20,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:20,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:20,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:20,478 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:20,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:20,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:20,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:20,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:20,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:20,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:20,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:20,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:20,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:20,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:20,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:20,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:20,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:20,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:20,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:20,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:20,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:20,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:20,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:20,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:20,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:20,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:20,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:20,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:20,484 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:09:20,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:20,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:20,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:20,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:20,947 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:20,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 03:09:21,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1033376/1676d054fe5c45178f3ee1a2a0417313/FLAGc00ab8999 [2020-09-25 03:09:21,566 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:21,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 03:09:21,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1033376/1676d054fe5c45178f3ee1a2a0417313/FLAGc00ab8999 [2020-09-25 03:09:21,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1033376/1676d054fe5c45178f3ee1a2a0417313 [2020-09-25 03:09:21,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:21,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:21,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:21,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:21,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:21,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:21" (1/1) ... [2020-09-25 03:09:21,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c00f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:21, skipping insertion in model container [2020-09-25 03:09:21,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:21" (1/1) ... [2020-09-25 03:09:21,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:21,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:22,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:22,189 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:22,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:22,226 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:22,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22 WrapperNode [2020-09-25 03:09:22,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:22,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:22,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:22,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:22,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... [2020-09-25 03:09:22,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:22,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:22,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:22,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:22,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:22,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:22,634 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:22,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:22 BoogieIcfgContainer [2020-09-25 03:09:22,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:22,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:22,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:22,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:22,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:21" (1/3) ... [2020-09-25 03:09:22,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00eebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:22, skipping insertion in model container [2020-09-25 03:09:22,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:22" (2/3) ... [2020-09-25 03:09:22,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00eebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:22, skipping insertion in model container [2020-09-25 03:09:22,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:22" (3/3) ... [2020-09-25 03:09:22,674 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-25 03:09:22,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:22,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:22,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:22,777 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:22,777 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:22,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:22,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:22,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:22,778 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:22,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:22,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:22,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:22,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:22,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:22,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:22,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:22,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338798714] [2020-09-25 03:09:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 03:09:23,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:09:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:09:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:23,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:23,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:23,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:23,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338798714] [2020-09-25 03:09:23,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:23,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:23,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759401565] [2020-09-25 03:09:23,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:23,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:23,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:23,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:23,283 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:23,368 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:23,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:23,388 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:23,388 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:23,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:23,452 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:23,452 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:23,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:23,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:23,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:23,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:23,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:23,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:23,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871112674] [2020-09-25 03:09:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 03:09:23,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:09:23,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:23,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:23,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:09:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:23,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871112674] [2020-09-25 03:09:23,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:23,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:23,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687776667] [2020-09-25 03:09:23,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:23,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:23,759 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:23,793 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:23,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:23,795 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:23,795 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:23,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:23,804 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:23,805 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:23,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:23,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:23,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:23,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:23,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:23,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:23,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954470025] [2020-09-25 03:09:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:25,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1911 [2020-09-25 03:09:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:25,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:25,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 03:09:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:09:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:26,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:26,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:09:26,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954470025] [2020-09-25 03:09:26,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:26,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:09:26,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176414954] [2020-09-25 03:09:26,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:26,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:26,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:26,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:26,238 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:26,378 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 03:09:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:09:26,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:26,386 INFO L225 Difference]: With dead ends: 47 [2020-09-25 03:09:26,386 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 03:09:26,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 03:09:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 03:09:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 03:09:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 03:09:26,410 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 03:09:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:26,410 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 03:09:26,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 03:09:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:26,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:26,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:26,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:26,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:26,414 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 03:09:26,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:26,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106603582] [2020-09-25 03:09:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:29,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:09:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3304 [2020-09-25 03:09:29,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:30,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-09-25 03:09:30,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:30,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:09:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 03:09:30,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106603582] [2020-09-25 03:09:30,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:30,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:30,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122459507] [2020-09-25 03:09:30,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:30,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:30,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:30,801 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 8 states. [2020-09-25 03:09:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:30,895 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2020-09-25 03:09:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:30,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 03:09:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:30,898 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:09:30,898 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:09:30,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:09:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-09-25 03:09:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:30,911 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:30,911 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:30,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:30,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:30,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:30,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:30,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:30,915 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 03:09:30,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:30,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235869143] [2020-09-25 03:09:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-09-25 03:09:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:31,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:32,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:32,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 03:09:32,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:32,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:32,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:09:32,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235869143] [2020-09-25 03:09:32,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:32,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:09:32,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218515066] [2020-09-25 03:09:32,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:09:32,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:09:32,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:32,219 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 6 states. [2020-09-25 03:09:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:32,289 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-09-25 03:09:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:32,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:09:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:32,292 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:32,292 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:32,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:32,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-09-25 03:09:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:32,303 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:32,304 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:32,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:09:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:32,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:32,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:32,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:32,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:32,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547870646] [2020-09-25 03:09:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-09-25 03:09:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:34,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:34,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:34,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:34,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:34,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:34,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:09:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:09:34,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547870646] [2020-09-25 03:09:34,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:34,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:34,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046336264] [2020-09-25 03:09:34,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:34,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:34,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:34,407 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-25 03:09:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:34,508 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2020-09-25 03:09:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:34,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:09:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:34,513 INFO L225 Difference]: With dead ends: 81 [2020-09-25 03:09:34,513 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 03:09:34,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 03:09:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 48. [2020-09-25 03:09:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 03:09:34,537 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 35 [2020-09-25 03:09:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:34,537 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 03:09:34,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 03:09:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:09:34,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:34,545 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:34,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:34,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:34,547 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 03:09:34,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:34,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508140135] [2020-09-25 03:09:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:09:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:09:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:09:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:39,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:39,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4314 [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:44,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 03:09:44,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:44,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 03:09:44,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508140135] [2020-09-25 03:09:44,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:44,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:44,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099500612] [2020-09-25 03:09:44,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:44,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:44,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:44,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:44,586 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 12 states. [2020-09-25 03:09:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:44,846 INFO L93 Difference]: Finished difference Result 96 states and 138 transitions. [2020-09-25 03:09:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:09:44,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:09:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:44,849 INFO L225 Difference]: With dead ends: 96 [2020-09-25 03:09:44,849 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:09:44,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:09:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:09:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 60. [2020-09-25 03:09:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 03:09:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2020-09-25 03:09:44,876 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 53 [2020-09-25 03:09:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:44,878 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2020-09-25 03:09:44,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2020-09-25 03:09:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:09:44,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:44,883 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] [2020-09-25 03:09:44,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:44,883 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:44,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 3 times [2020-09-25 03:09:44,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:44,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728603601] [2020-09-25 03:09:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:49,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:09:49,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:09:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:49,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2573 [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 03:09:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:52,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:52,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:52,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:09:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:52,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:52,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:52,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 03:09:52,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728603601] [2020-09-25 03:09:52,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:52,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:52,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3977487] [2020-09-25 03:09:52,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:52,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:52,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:52,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:52,702 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 7 states. [2020-09-25 03:09:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:52,829 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2020-09-25 03:09:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:52,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 03:09:52,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:52,832 INFO L225 Difference]: With dead ends: 78 [2020-09-25 03:09:52,832 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 03:09:52,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 03:09:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 48. [2020-09-25 03:09:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 03:09:52,851 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 51 [2020-09-25 03:09:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:52,852 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 03:09:52,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 03:09:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 03:09:52,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:52,855 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] [2020-09-25 03:09:52,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:09:52,855 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 4 times [2020-09-25 03:09:52,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:52,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714844055] [2020-09-25 03:09:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 03:09:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 03:09:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 03:09:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 03:09:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 03:10:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:10:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:10:02,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:10:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:10:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:03,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 03:10:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:03,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:03,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:10:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-09-25 03:10:04,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:04,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:10:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 03:10:04,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714844055] [2020-09-25 03:10:04,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:04,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:10:04,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225335642] [2020-09-25 03:10:04,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:10:04,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:10:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:10:04,798 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 10 states. [2020-09-25 03:10:05,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:05,113 INFO L93 Difference]: Finished difference Result 105 states and 169 transitions. [2020-09-25 03:10:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:10:05,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 03:10:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:05,115 INFO L225 Difference]: With dead ends: 105 [2020-09-25 03:10:05,115 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:05,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:10:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-09-25 03:10:05,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 85 [2020-09-25 03:10:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:05,137 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-09-25 03:10:05,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:10:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-09-25 03:10:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 03:10:05,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:05,142 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:05,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:10:05,143 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 3 times [2020-09-25 03:10:05,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:05,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416495678] [2020-09-25 03:10:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 03:10:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:10:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking...