/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:47:59,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:47:59,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:47:59,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:47:59,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:47:59,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:47:59,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:47:59,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:47:59,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:47:59,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:47:59,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:47:59,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:47:59,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:47:59,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:47:59,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:47:59,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:47:59,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:47:59,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:47:59,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:47:59,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:47:59,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:47:59,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:47:59,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:47:59,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:47:59,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:47:59,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:47:59,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:47:59,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:47:59,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:47:59,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:47:59,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:47:59,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:47:59,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:47:59,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:47:59,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:47:59,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:47:59,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:47:59,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:47:59,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:47:59,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:47:59,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:47:59,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:47:59,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:47:59,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:47:59,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:47:59,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:47:59,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:47:59,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:47:59,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:47:59,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:47:59,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:47:59,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:47:59,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:47:59,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:47:59,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:47:59,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:47:59,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:47:59,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:47:59,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:47:59,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:47:59,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:47:59,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:47:59,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:47:59,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:47:59,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:47:59,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:47:59,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:47:59,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:47:59,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:47:59,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:47:59,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:47:59,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:47:59,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:47:59,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:47:59,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:47:59,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:47:59,919 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:47:59,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 23:48:00,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb3797d7/2c6ffb4b99b544428ddb52f4f91cd282/FLAGddac0ead5 [2020-09-24 23:48:00,573 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:48:00,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 23:48:00,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb3797d7/2c6ffb4b99b544428ddb52f4f91cd282/FLAGddac0ead5 [2020-09-24 23:48:00,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb3797d7/2c6ffb4b99b544428ddb52f4f91cd282 [2020-09-24 23:48:00,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:48:00,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:48:00,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:00,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:48:00,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:48:00,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:00" (1/1) ... [2020-09-24 23:48:00,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c294ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:00, skipping insertion in model container [2020-09-24 23:48:00,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:00" (1/1) ... [2020-09-24 23:48:00,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:48:01,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:48:01,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:01,225 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:48:01,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:01,264 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:48:01,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01 WrapperNode [2020-09-24 23:48:01,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:01,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:48:01,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:48:01,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:48:01,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... [2020-09-24 23:48:01,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:48:01,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:48:01,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:48:01,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:48:01,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:48:01,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:48:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:48:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 23:48:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 23:48:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:48:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 23:48:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:48:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 23:48:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 23:48:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:48:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:48:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:48:01,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:48:01,708 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:48:01,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:01 BoogieIcfgContainer [2020-09-24 23:48:01,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:48:01,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:48:01,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:48:01,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:48:01,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:48:00" (1/3) ... [2020-09-24 23:48:01,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206e4c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:01, skipping insertion in model container [2020-09-24 23:48:01,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:01" (2/3) ... [2020-09-24 23:48:01,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206e4c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:01, skipping insertion in model container [2020-09-24 23:48:01,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:01" (3/3) ... [2020-09-24 23:48:01,740 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-09-24 23:48:01,766 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:48:01,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:48:01,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:48:01,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:48:01,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:48:01,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:48:01,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:48:01,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:48:01,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:48:01,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:48:01,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:48:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 23:48:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:48:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:01,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:01,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:01,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:01,871 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 23:48:01,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:01,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370972133] [2020-09-24 23:48:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:48:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 23:48:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:48:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:48:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:02,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:02,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:48:02,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:02,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:02,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 23:48:02,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:48:02,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370972133] [2020-09-24 23:48:02,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:02,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:48:02,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043115434] [2020-09-24 23:48:02,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:48:02,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:02,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:48:02,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:48:02,300 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 23:48:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:02,389 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 23:48:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:48:02,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:48:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:02,403 INFO L225 Difference]: With dead ends: 51 [2020-09-24 23:48:02,403 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 23:48:02,408 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 [2020-09-24 23:48:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 23:48:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 23:48:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 23:48:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 23:48:02,463 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 23:48:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:02,463 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 23:48:02,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:48:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 23:48:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 23:48:02,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:02,467 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:48:02,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:48:02,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 23:48:02,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:02,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393355586] [2020-09-24 23:48:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:48:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-24 23:48:02,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:48:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:48:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:48:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:02,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:02,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 23:48:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:03,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:48:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:48:03,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393355586] [2020-09-24 23:48:03,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:03,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:48:03,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546170630] [2020-09-24 23:48:03,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:48:03,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:48:03,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:48:03,200 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 23:48:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:03,306 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 23:48:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:48:03,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 23:48:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:03,308 INFO L225 Difference]: With dead ends: 66 [2020-09-24 23:48:03,309 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 23:48:03,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 23:48:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 23:48:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 23:48:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 23:48:03,319 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 23:48:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:03,320 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 23:48:03,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:48:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 23:48:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 23:48:03,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:03,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:03,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:48:03,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 23:48:03,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:03,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24964982] [2020-09-24 23:48:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:04,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 23:48:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-09-24 23:48:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 23:48:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:04,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:04,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 23:48:04,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 23:48:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:04,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 23:48:04,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:48:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:04,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:04,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:48:04,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:48:04,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24964982] [2020-09-24 23:48:04,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:04,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:48:04,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295733782] [2020-09-24 23:48:04,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:48:04,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:48:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:48:04,618 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 23:48:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:04,661 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-09-24 23:48:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:48:04,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 23:48:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:04,664 INFO L225 Difference]: With dead ends: 69 [2020-09-24 23:48:04,664 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 23:48:04,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:48:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 23:48:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 23:48:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 23:48:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 23:48:04,673 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 23:48:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:04,674 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 23:48:04,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:48:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 23:48:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 23:48:04,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:04,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:04,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:48:04,676 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:04,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 23:48:04,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:04,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210988181] [2020-09-24 23:48:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:05,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 23:48:05,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:48:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-24 23:48:05,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 23:48:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:05,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:05,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:05,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:05,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 23:48:05,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 23:48:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:48:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:48:05,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210988181] [2020-09-24 23:48:05,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:05,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:48:05,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203083816] [2020-09-24 23:48:05,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:48:05,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:48:05,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:05,443 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 23:48:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:05,619 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-09-24 23:48:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:48:05,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 23:48:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:05,622 INFO L225 Difference]: With dead ends: 78 [2020-09-24 23:48:05,622 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 23:48:05,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:48:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 23:48:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-24 23:48:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 23:48:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 23:48:05,631 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2020-09-24 23:48:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:05,631 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 23:48:05,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:48:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 23:48:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:48:05,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:05,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:05,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:48:05,634 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1866785798, now seen corresponding path program 1 times [2020-09-24 23:48:05,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:05,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282197472] [2020-09-24 23:48:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 23:48:07,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1764 [2020-09-24 23:48:07,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 23:48:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:48:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:07,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:07,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:07,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:07,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-24 23:48:08,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:48:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:48:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:08,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 23:48:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 23:48:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:48:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:08,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 23:48:08,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:08,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:08,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:48:08,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 23:48:08,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282197472] [2020-09-24 23:48:08,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:08,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:48:08,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480138310] [2020-09-24 23:48:08,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:48:08,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:08,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:48:08,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:48:08,365 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2020-09-24 23:48:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:08,478 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 23:48:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:48:08,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 23:48:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:08,480 INFO L225 Difference]: With dead ends: 81 [2020-09-24 23:48:08,480 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:48:08,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:48:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-24 23:48:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 23:48:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 23:48:08,490 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 23:48:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:08,490 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 23:48:08,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:48:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 23:48:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:48:08,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:08,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:08,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:48:08,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 23:48:08,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:08,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031803207] [2020-09-24 23:48:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:08,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 23:48:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-24 23:48:09,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:48:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 23:48:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:48:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:09,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:09,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 23:48:09,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:09,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 23:48:09,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:10,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 23:48:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:10,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:10,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:48:10,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 23:48:10,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031803207] [2020-09-24 23:48:10,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:10,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:48:10,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934615376] [2020-09-24 23:48:10,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:48:10,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:48:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:48:10,165 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 14 states. [2020-09-24 23:48:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:10,483 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-09-24 23:48:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:48:10,484 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 23:48:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:10,485 INFO L225 Difference]: With dead ends: 90 [2020-09-24 23:48:10,485 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 23:48:10,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:48:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 23:48:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-24 23:48:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 23:48:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 23:48:10,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 43 [2020-09-24 23:48:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:10,500 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 23:48:10,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:48:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 23:48:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 23:48:10,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:10,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:10,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:48:10,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1598367544, now seen corresponding path program 1 times [2020-09-24 23:48:10,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:10,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027930762] [2020-09-24 23:48:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:13,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 23:48:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3022 [2020-09-24 23:48:13,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 23:48:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:13,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:13,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:48:13,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:14,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:14,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-09-24 23:48:14,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 23:48:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 23:48:14,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:48:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:48:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 23:48:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:15,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:15,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:48:15,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:15,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:48:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 23:48:15,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027930762] [2020-09-24 23:48:15,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:15,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:48:15,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740157236] [2020-09-24 23:48:15,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:48:15,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:15,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:48:15,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:15,205 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 23:48:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:15,390 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-09-24 23:48:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:48:15,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 23:48:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:15,392 INFO L225 Difference]: With dead ends: 93 [2020-09-24 23:48:15,392 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 23:48:15,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:48:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 23:48:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-09-24 23:48:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 23:48:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 23:48:15,401 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 52 [2020-09-24 23:48:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:15,401 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 23:48:15,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:48:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 23:48:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 23:48:15,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:15,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:15,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:48:15,404 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 23:48:15,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:15,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066024878] [2020-09-24 23:48:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 23:48:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:48:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-09-24 23:48:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:48:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 23:48:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:48:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:16,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 23:48:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:48:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:48:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:16,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:17,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 23:48:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:17,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:17,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:17,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 23:48:17,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:17,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:48:17,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:17,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:17,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:48:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 23:48:17,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066024878] [2020-09-24 23:48:17,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:17,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:48:17,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930229059] [2020-09-24 23:48:17,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:48:17,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:48:17,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:48:17,667 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 17 states. [2020-09-24 23:48:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:18,057 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-09-24 23:48:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:48:18,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-24 23:48:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:18,059 INFO L225 Difference]: With dead ends: 102 [2020-09-24 23:48:18,059 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 23:48:18,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2020-09-24 23:48:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 23:48:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-09-24 23:48:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 23:48:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 23:48:18,074 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 52 [2020-09-24 23:48:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:18,074 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 23:48:18,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:48:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 23:48:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:48:18,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:18,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:18,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:48:18,076 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash -185860060, now seen corresponding path program 1 times [2020-09-24 23:48:18,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:18,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404114850] [2020-09-24 23:48:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:21,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:21,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 23:48:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3866 [2020-09-24 23:48:21,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:48:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 23:48:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:48:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:23,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:23,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:48:23,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-09-24 23:48:23,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:48:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 23:48:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:48:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 23:48:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:48:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 23:48:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:48:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:23,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:23,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 23:48:23,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:23,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 23:48:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:48:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:48:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 23:48:24,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404114850] [2020-09-24 23:48:24,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:24,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:48:24,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063745722] [2020-09-24 23:48:24,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:48:24,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:48:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:48:24,241 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 14 states. [2020-09-24 23:48:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:24,504 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2020-09-24 23:48:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:48:24,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-24 23:48:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:24,506 INFO L225 Difference]: With dead ends: 105 [2020-09-24 23:48:24,508 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 23:48:24,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:48:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 23:48:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-09-24 23:48:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 23:48:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-24 23:48:24,524 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 61 [2020-09-24 23:48:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:24,524 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-24 23:48:24,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:48:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-24 23:48:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:48:24,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:24,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:24,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:48:24,526 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:24,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 23:48:24,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:24,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001022152] [2020-09-24 23:48:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 23:48:26,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:48:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1658 [2020-09-24 23:48:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:48:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 23:48:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:48:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:26,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:26,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:48:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-24 23:48:26,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:48:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 23:48:26,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-24 23:48:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:48:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:48:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 23:48:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 23:48:27,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:27,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 23:48:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:48:27,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 23:48:28,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001022152] [2020-09-24 23:48:28,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:28,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 23:48:28,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574719610] [2020-09-24 23:48:28,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 23:48:28,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:28,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 23:48:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:48:28,020 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 20 states. [2020-09-24 23:48:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:28,760 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-09-24 23:48:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 23:48:28,763 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-09-24 23:48:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:28,765 INFO L225 Difference]: With dead ends: 116 [2020-09-24 23:48:28,765 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 23:48:28,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 23:48:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 23:48:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2020-09-24 23:48:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 23:48:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-24 23:48:28,786 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 61 [2020-09-24 23:48:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:28,787 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-24 23:48:28,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 23:48:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-24 23:48:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 23:48:28,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:28,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:28,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:48:28,789 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash 841467122, now seen corresponding path program 2 times [2020-09-24 23:48:28,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:28,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353525464] [2020-09-24 23:48:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4561 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:48:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:48:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 23:48:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:48:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 23:48:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:48:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:48:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:35,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:35,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-24 23:48:35,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:48:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:48:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:35,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 23:48:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:35,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:35,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 23:48:35,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:35,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:35,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:35,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:35,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 23:48:35,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:35,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:35,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:48:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 23:48:35,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353525464] [2020-09-24 23:48:35,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:35,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:48:35,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542761586] [2020-09-24 23:48:35,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:48:35,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:35,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:48:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:48:35,849 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 17 states. [2020-09-24 23:48:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:36,219 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-24 23:48:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:48:36,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-09-24 23:48:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:36,221 INFO L225 Difference]: With dead ends: 119 [2020-09-24 23:48:36,221 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 23:48:36,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2020-09-24 23:48:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 23:48:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-09-24 23:48:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 23:48:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-09-24 23:48:36,229 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 70 [2020-09-24 23:48:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:36,229 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-09-24 23:48:36,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:48:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-09-24 23:48:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 23:48:36,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:36,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:36,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:48:36,231 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:36,231 INFO L82 PathProgramCache]: Analyzing trace with hash -756456142, now seen corresponding path program 3 times [2020-09-24 23:48:36,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:36,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425191947] [2020-09-24 23:48:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3706 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 23:48:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:48:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:39,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:39,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:40,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:48:40,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-24 23:48:40,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:48:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 23:48:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:48:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:40,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:40,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 23:48:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:48:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:48:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:41,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:41,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:41,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:48:41,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 23:48:41,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:48:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:41,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:48:41,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 23:48:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:41,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:41,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:48:41,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 23:48:41,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:48:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:48:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:48:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:41,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:41,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:41,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 23:48:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425191947] [2020-09-24 23:48:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 23:48:42,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70176287] [2020-09-24 23:48:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 23:48:42,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 23:48:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:48:42,032 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 20 states. [2020-09-24 23:48:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:42,639 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2020-09-24 23:48:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 23:48:42,640 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-09-24 23:48:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:42,641 INFO L225 Difference]: With dead ends: 127 [2020-09-24 23:48:42,641 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 23:48:42,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 23:48:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 23:48:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-09-24 23:48:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 23:48:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-09-24 23:48:42,655 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 70 [2020-09-24 23:48:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:42,655 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-09-24 23:48:42,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 23:48:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-09-24 23:48:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 23:48:42,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:42,660 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:42,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:48:42,660 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash -242092146, now seen corresponding path program 3 times [2020-09-24 23:48:42,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:42,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171844678] [2020-09-24 23:48:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 23:48:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:48:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking...